MotoGP Data dominance · tyre · race pace
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Round 4 of 15 Aftermath

Czech Grand Prix 2020

CREDITAS Autodrom Brno Czechia

5.403 m · since 1930
07.08 – 09.08.2020
Aftermath

What happened

The official result against what we predicted, race craft by phase and the start.

Race result

Pos.RiderBikeTeamTime / gapPoints
1Brad BinderKTMRed Bull KTM Factory Racing41:38.76425
2Franco MorbidelliYamahaPetronas Yamaha SRT+5.26620
3Johann ZarcoDucatiHublot Reale Avintia+6.47016
4Alex RinsSuzukiTeam SUZUKI ECSTAR+6.60913
5Valentino RossiYamahaMonster Energy Yamaha MotoGP+7.51711
6Miguel OliveiraKTMRed Bull KTM Tech 3+7.96910
7Fabio QuartararoYamahaPetronas Yamaha SRT+11.8279
8Takaaki NakagamiHondaLCR Honda IDEMITSU+12.8628
9Jack MillerDucatiPramac Racing+15.0137
10Aleix EspargaroApriliaAprilia Racing Team Gresini+15.0876
11Andrea DoviziosoDucatiDucati Team+16.4555
12Danilo PetrucciDucatiDucati Team+18.5064
13Cal CrutchlowHondaLCR Honda CASTROL+18.7363
14Maverick ViñalesYamahaMonster Energy Yamaha MotoGP+19.7202
15Alex MarquezHondaRepsol Honda Team+24.5971
16Tito RabatDucatiHublot Reale Avintia+29.0040
17Bradley SmithApriliaAprilia Racing Team Gresini+32.2900
18Stefan BradlHondaRepsol Honda Team+55.9770
DNFIker LecuonaKTMRed Bull KTM Tech 3Retired0
DNFJoan MirSuzukiTeam SUZUKI ECSTARRetired0
DNFPol EspargaroKTMRed Bull KTM Factory RacingRetired0

Sprint result

Pending · no data yet

Forecast vs reality

C14
ForecastFavouriteWinnerOrder (model / grid)Position error (model / calibrated grid)
Race (after the grid)Johann Zarco · 31%Brad Binder · 3% · from P70.64 / 0.643.7 / 3.7

Error: average positions off, compared with the calibrated grid (the grid turned into expected positions with a simple regression, no model). If the model does not beat it, its edge over the raw grid is only calibration.

Lap-by-lap positions: race

Position crossing the line on each lap. The top six are in colour; the rest can be switched on in the legend. When a rider retires, their line ends.

Lap-by-lap positions: sprint

Pending · no data yet

Race pace

RiderPaceGapDeg. s/lapRearn
Pol Espargaro1:58.036—+0.406Medium7
Brad Binder1:58.697+0.661+0.327Medium19
Valentino Rossi1:58.852+0.816+0.508Medium19
Johann Zarco1:58.892+0.856+0.344Soft19
Miguel Oliveira1:58.907+0.871+0.193Medium19
Alex Rins1:58.932+0.896+0.217Soft19
Franco Morbidelli1:59.067+1.031+0.512Soft19
Cal Crutchlow1:59.143+1.107+0.729Medium19
Takaaki Nakagami1:59.223+1.187+0.359Medium19
Fabio Quartararo1:59.344+1.308+0.275Medium19
Jack Miller1:59.349+1.313+0.105Soft19
Andrea Dovizioso1:59.363+1.327+0.226Soft19
Danilo Petrucci1:59.364+1.328+0.574Soft19
Aleix Espargaro1:59.520+1.484+0.209Soft19
Maverick Viñales1:59.556+1.520+0.292Soft19
Alex Marquez1:59.630+1.594+0.356Medium17
Tito Rabat1:59.787+1.751+0.229Soft19
Bradley Smith2:00.140+2.104+0.085Soft19
Stefan Bradl2:00.157+2.121+0.530Medium18

Actual race pace: median of the clean laps, excluding the first lap, cancelled laps and pit laps. Degradation mixes tyre wear, fuel and traffic.

The race in numbers

Race

47
Overtakes
1
Lead changes
2 leaders
9/21
Laps led by the winner
Brad Binder
5.266 s
Closest finish

Comeback of the day: Takaaki Nakagami, from P17 to P8.

Longest battle: Andrea Dovizioso vs Jack Miller (11 laps).

Overtakes are counted at the finish line: moves undone within the same lap are not seen. It is a measure of movement, not an official statistic.

Incidents

SessionTimeRiderWhatDetail
Race14:01:37Jump startJump start
Race14:08:56Joan MirCrashCrashed out - Rider OK
Race14:08:56Iker LecuonaCrashCrashed out - Rider OK
Race14:18:48Pol EspargaroCrashCrashed out - Rider OK
Race14:26:13Johann ZarcoLong lapLong lap penalty due to irresponsible riding

Official race direction log (Session.pdf). Times are local circuit time.

The tyre gamble

RearShareRel. paceDeg. s/lapWinsPodiumsAvg. pos.
Medium52%+0.74%+0.087119.1
Soft48%+1.12%+0.104029.8

Rear compound in the race. Pace is relative to the best of the session; degradation includes fuel and traffic, so only compare within the same race.

Race weather

C25
28.4 °C
Air
max 28.6 °C
43%
Humidity
Dry
Rain
9 km/h
Wind
gusts 27 km/h

Open-Meteo data at the circuit location during the race; not the track temperature.

Race weekend

As it happens

Live timing, the grid as it forms and who wins the run to turn one.

The weekend, session by session

FP1 · 07.08
Pos.RiderBest lapGapLapsTop km/hTyres (front / rear)Long-run pacePace gapn runRun rear
1Takaaki Nakagami01:57.353—17310.3Medium / Hard1:58.320+0.26%5Medium
2Joan Mir01:57.364+0.01117308.5Soft / Hard1:59.300+1.09%5Medium
3Pol Espargaro01:57.392+0.03916313.0Soft / Medium1:58.113+0.08%5Medium
4Johann Zarco01:57.460+0.10718308.5Hard / Medium1:58.785+0.65%7Medium
5Maverick Viñales01:57.565+0.21214307.6Soft / Medium1:59.575+1.32%5Medium
6Andrea Dovizioso01:57.632+0.27916313.9Medium / Medium——
7Danilo Petrucci01:57.638+0.28513310.3Medium / Medium——
8Valentino Rossi01:57.646+0.29317305.9Hard / Hard1:59.503+1.26%5Medium
9Franco Morbidelli01:57.718+0.36518305.9Soft / Medium1:58.014—6Medium
10Cal Crutchlow01:57.753+0.40017312.1Medium / Medium1:58.339+0.28%4Medium
11Aleix Espargaro01:57.789+0.43614308.5Medium / Medium——
12Alex Rins01:57.823+0.47014308.5Soft / Medium——
13Fabio Quartararo01:57.831+0.47818306.8Soft / Medium1:58.182+0.14%4Medium
14Jack Miller01:57.836+0.48315311.2Soft / Hard——
15Francesco Bagnaia01:57.839+0.48614310.3Medium / Medium1:58.606+0.50%5Medium
16Brad Binder01:58.013+0.66017308.5Soft / Medium1:59.132+0.95%5Medium
17Miguel Oliveira01:58.161+0.80817308.5Medium / Medium——
18Alex Marquez01:58.579+1.22618310.3Medium / Medium——
19Tito Rabat01:58.728+1.37515304.2Medium / Medium——
20Bradley Smith01:58.817+1.46414306.8Medium / Medium——
21Iker Lecuona01:59.136+1.78319306.8Soft / Medium1:59.536+1.29%8Medium
22Stefan Bradl01:59.193+1.84016308.5Medium / Medium——
FP2 · 07.08 partly wet
Pos.RiderBest lapGapLapsTop km/hTyres (front / rear)Long-run pacePace gapn runRun rear
1Fabio Quartararo01:56.502—15307.6Medium / Soft1:57.800—5Hard
2Franco Morbidelli01:56.509+0.00718306.8Medium / Soft1:57.864+0.05%6Hard
3Miguel Oliveira01:56.550+0.04817311.2Hard / Soft1:57.890+0.08%5Hard
4Johann Zarco01:56.583+0.08118313.0Hard / Soft1:58.465+0.57%10Hard
5Maverick Viñales01:56.668+0.16617307.6Medium / Soft——
6Joan Mir01:56.876+0.37416308.5Medium / Soft1:58.135+0.28%5Medium
7Aleix Espargaro01:57.041+0.53915312.1Hard / Soft——
8Pol Espargaro01:57.059+0.55713313.0Medium / Soft——
9Takaaki Nakagami01:57.073+0.57118309.4Hard / Soft2:01.460+3.11%6Hard
10Jack Miller01:57.109+0.60717312.1Medium / Soft——
11Brad Binder01:57.279+0.77715308.5Medium / Soft——
12Valentino Rossi01:57.290+0.78819307.6Medium / Soft1:58.727+0.79%11Medium
13Alex Rins01:57.354+0.85214309.4Medium / Medium——
14Danilo Petrucci01:57.620+1.11816312.1Hard / Soft——
15Andrea Dovizioso01:57.635+1.13318313.0Hard / missing——
16Alex Marquez01:57.688+1.18616311.2Hard / Soft1:58.222+0.36%6Medium
17Tito Rabat01:57.777+1.27514305.9Hard / Soft——
18Cal Crutchlow01:57.865+1.36316312.1Hard / Hard——
19Bradley Smith01:58.161+1.65916309.4Hard / Hard——
20Iker Lecuona01:58.378+1.87615307.6Hard / Soft——
21Stefan Bradl01:58.424+1.92217311.2Medium / Soft1:59.370+1.33%5Hard
RetiredFrancesco Bagnaia—00.0— / ———
FP3 · 08.08
Pos.RiderBest lapGapLapsTop km/hTyres (front / rear)Long-run pacePace gapn runRun rear
1Franco Morbidelli01:56.037—15307.6Hard / Soft1:57.733+0.48%5Soft
2Johann Zarco01:56.053+0.01618313.0Hard / Soft1:57.917+0.63%10Soft
3Fabio Quartararo01:56.134+0.09718307.6Medium / Soft1:58.078+0.77%5Hard
4Pol Espargaro01:56.140+0.10313313.9Hard / Soft——
5Valentino Rossi01:56.150+0.11319306.8Medium / Soft1:57.174—5Medium
6Aleix Espargaro01:56.183+0.14615311.2Hard / Soft1:57.854+0.58%5Soft
7Joan Mir01:56.261+0.22415310.3Medium / Soft——
8Cal Crutchlow01:56.263+0.22616313.0Hard / Soft——
9Maverick Viñales01:56.282+0.24516308.5Medium / Soft——
10Danilo Petrucci01:56.294+0.25715313.0Hard / Soft——
11Alex Rins01:56.355+0.31816312.1Medium / Soft——
12Takaaki Nakagami01:56.457+0.42017310.3Hard / Soft1:57.917+0.63%6Medium
13Andrea Dovizioso01:56.521+0.48417316.7Hard / Soft——
14Jack Miller01:56.590+0.55317313.9Medium / Soft1:58.294+0.96%5Soft
15Brad Binder01:56.730+0.69315310.3Hard / Medium——
16Tito Rabat01:57.031+0.99416308.5Hard / Soft1:58.713+1.31%6Medium
17Bradley Smith01:57.052+1.01517309.4Hard / Soft1:58.080+0.77%5Soft
18Miguel Oliveira01:57.071+1.03414311.2Hard / Medium——
19Alex Marquez01:57.335+1.29818312.1Hard / Soft1:58.366+1.02%6Soft
20Stefan Bradl01:57.509+1.47216312.1Hard / Soft——
21Iker Lecuona01:57.569+1.53216310.3Hard / Soft——
FP4 · 08.08
Pos.RiderBest lapGapLapsTop km/hTyres (front / rear)Long-run pacePace gapn runRun rear
1Fabio Quartararo01:56.959—13304.2Hard / Medium1:57.134—5Medium
2Pol Espargaro01:56.967+0.00812313.0Hard / Medium——
3Franco Morbidelli01:57.437+0.47811305.0Hard / Medium1:57.779+0.55%5Medium
4Alex Rins01:57.547+0.58810307.6Hard / Soft——
5Valentino Rossi01:57.751+0.79211309.4Medium / Medium——
6Andrea Dovizioso01:57.844+0.88513314.8Hard / Medium——
7Joan Mir01:57.919+0.96014308.5Medium / Medium1:58.378+1.06%6Medium
8Aleix Espargaro01:57.979+1.02010310.3Hard / Soft——
9Brad Binder01:58.002+1.04313312.1Hard / Medium1:58.406+1.09%5Medium
10Takaaki Nakagami01:58.032+1.07313308.5Hard / Medium1:58.338+1.03%5Soft
11Miguel Oliveira01:58.085+1.12611305.9Hard / Medium——
12Johann Zarco01:58.106+1.14713310.3Hard / Medium——
13Maverick Viñales01:58.125+1.16612306.8Medium / Medium——
14Jack Miller01:58.231+1.27212315.7Hard / Soft——
15Alex Marquez01:58.366+1.40711309.4Hard / Medium1:59.006+1.60%6Soft
16Danilo Petrucci01:58.370+1.41112311.2Hard / Medium——
17Tito Rabat01:58.374+1.41513308.5Hard / Soft1:59.346+1.89%5Soft
18Iker Lecuona01:58.433+1.47410305.0Hard / Medium——
19Cal Crutchlow01:58.513+1.55412310.3Hard / Medium——
20Bradley Smith01:58.536+1.57711306.8Hard / Hard——
21Stefan Bradl01:59.448+2.48913311.2Hard / Soft——
Q1 · 08.08
Pos.RiderBest lapGapLapsTop km/hTyres (front / rear)
1Alex Rins01:56.230—7309.4Hard / Soft
2Brad Binder01:56.291+0.0617310.3Hard / Soft
3Miguel Oliveira01:56.328+0.0987309.4Hard / Soft
4Jack Miller01:56.352+0.1226312.1Medium / Soft
5Tito Rabat01:56.695+0.4657311.2Hard / Soft
6Iker Lecuona01:56.764+0.5347310.3Hard / Soft
7Takaaki Nakagami01:56.822+0.5927308.5Hard / Soft
8Andrea Dovizioso01:57.034+0.8047314.8Hard / Soft
9Bradley Smith01:57.438+1.2084307.6Hard / Soft
10Stefan Bradl01:57.573+1.3437313.0Hard / Soft
11Alex Marquez01:57.606+1.3767312.1Hard / Soft
Q2 · 08.08
Pos.RiderBest lapGapLapsTop km/hTyres (front / rear)
1Johann Zarco01:55.687—7315.7Hard / Soft
2Fabio Quartararo01:55.990+0.3036305.9Hard / Soft
3Franco Morbidelli01:55.998+0.3117308.5Hard / Soft
4Aleix Espargaro01:56.074+0.3877312.1Hard / Soft
5Maverick Viñales01:56.131+0.4447306.8Medium / Soft
6Pol Espargaro01:56.142+0.4556314.8Hard / Soft
7Brad Binder01:56.299+0.6126313.9Hard / Medium
8Danilo Petrucci01:56.454+0.7676314.8Hard / Soft
9Joan Mir01:56.512+0.8257310.3Medium / Soft
10Valentino Rossi01:56.515+0.8287307.6Medium / Soft
11Alex Rins01:56.571+0.8844311.2Hard / Soft
12Cal Crutchlow01:56.797+1.1104313.9Hard / Soft
Warm Up · 09.08
Pos.RiderBest lapGapLapsTop km/hTyres (front / rear)Long-run pacePace gapn runRun rear
1Pol Espargaro01:57.037—10312.1Hard / Medium1:57.462+0.02%7Medium
2Maverick Viñales01:57.062+0.02510305.9Hard / Soft1:57.726+0.24%8Soft
3Fabio Quartararo01:57.074+0.03710307.6Hard / Medium1:57.769+0.28%8Medium
4Franco Morbidelli01:57.137+0.10011305.0Hard / Soft1:57.439—9Soft
5Brad Binder01:57.163+0.12610307.6Hard / Medium1:57.547+0.09%8Medium
6Takaaki Nakagami01:57.184+0.14710307.6Medium / Medium1:57.602+0.14%6Medium
7Jack Miller01:57.356+0.31910311.2Medium / Soft——
8Joan Mir01:57.378+0.34110308.5Hard / Medium1:57.664+0.19%8Medium
9Aleix Espargaro01:57.420+0.38310310.3Hard / Soft1:58.182+0.63%8Soft
10Andrea Dovizioso01:57.520+0.48311314.8Hard / Soft1:57.971+0.45%9Soft
11Iker Lecuona01:57.548+0.51110306.8Hard / Medium1:58.042+0.51%7Medium
12Valentino Rossi01:57.578+0.54111305.0Hard / Soft1:57.957+0.44%9Soft
13Danilo Petrucci01:57.677+0.64010312.1Hard / Soft1:58.260+0.70%8Soft
14Miguel Oliveira01:57.717+0.68010310.3Hard / Medium1:57.989+0.47%7Medium
15Johann Zarco01:57.767+0.73010309.4Hard / Soft1:58.516+0.92%7Soft
16Bradley Smith01:57.792+0.75510308.5Hard / Medium1:58.357+0.78%8Medium
17Cal Crutchlow01:58.040+1.00310309.4Medium / Soft1:58.618+1.00%6Soft
18Alex Marquez01:58.389+1.35210311.2Hard / Medium1:59.696+1.92%8Medium
19Tito Rabat01:58.548+1.51110307.6Hard / Medium1:58.745+1.11%8Medium
20Stefan Bradl01:58.957+1.92010310.3Hard / Medium1:59.652+1.88%8Medium
RetiredAlex Rins—00.0Hard / Soft——
Race · 09.08
Pos.RiderTime / gapPointsLapsTyres (front / rear)Long-run pacePace gapn runRun rear
1Brad Binder41:38.7642521Hard / Medium1:58.697+0.56%19Medium
2Franco Morbidelli+5.2662021Hard / Soft1:59.067+0.87%19Soft
3Johann Zarco+6.4701621Hard / Soft1:58.892+0.73%19Soft
4Alex Rins+6.6091321Hard / Soft1:58.932+0.76%19Soft
5Valentino Rossi+7.5171121Hard / Medium1:58.852+0.69%19Medium
6Miguel Oliveira+7.9691021Hard / Medium1:58.907+0.74%19Medium
7Fabio Quartararo+11.827921Hard / Medium1:59.344+1.11%19Medium
8Takaaki Nakagami+12.862821Hard / Medium1:59.223+1.01%19Medium
9Jack Miller+15.013721Hard / Soft1:59.349+1.11%19Soft
10Aleix Espargaro+15.087621Hard / Soft1:59.520+1.26%19Soft
11Andrea Dovizioso+16.455521Hard / Soft1:59.363+1.12%19Soft
12Danilo Petrucci+18.506421Hard / Soft1:59.364+1.13%19Soft
13Cal Crutchlow+18.736321Hard / Medium1:59.143+0.94%19Medium
14Maverick Viñales+19.720221Hard / Soft1:59.556+1.29%19Soft
15Alex Marquez+24.597121Hard / Medium1:59.630+1.35%17Medium
16Tito Rabat+29.004021Hard / Soft1:59.787+1.48%19Soft
17Bradley Smith+32.290021Hard / Soft2:00.140+1.78%19Soft
18Stefan Bradl+55.977021Hard / Medium2:00.157+1.80%18Medium
RetiredIker Lecuona03Hard / Medium——
RetiredJoan Mir03Hard / Medium——
RetiredPol Espargaro09Hard / Medium1:58.036—7Medium

Official classification of each session (Dorna). Best lap and the tyres used on it: official FIM PDFs. Long-run pace: median of the clean laps in long runs (5 flying laps or more); blank if the rider did none. Every rider runs their own programme and fuel load, so long-run pace only compares within the same session.

Long-run pace in practice

RiderPaceGapDeg. s/lapRearn
Cal Crutchlow1:57.558*—+0.729Medium3
Valentino Rossi1:57.988+0.430+0.508Medium9
Joan Mir1:58.228+0.670+0.562Medium8

Estimated practice pace: median of the clean laps on the medium compound used in practice. It is an estimate: every team runs its own programme and fuel load. n = laps used (at least 3). * = only 3 or 4 laps: pace less reliable.

Grid penalties

Pending · no data yet

Sprint forecast

C13s

Win and podium chances in Saturday’s sprint, based on the grid.

Pending · no data yet

Race forecast

C13

Forecast based on the starting grid.

RiderGridWinPodiumTop 5Top 10P(DNF)Final
Johann Zarco131%61%75%83%15%3
Fabio Quartararo221%51%66%78%19%7
Franco Morbidelli314%42%61%76%21%2
Aleix Espargaro410%34%51%70%26%10
Maverick Viñales58%33%57%82%12%14
Pol Espargaro66%22%44%73%20%—
Brad Binder73%15%33%64%27%1
Danilo Petrucci83%14%31%68%21%12
Joan Mir91%8%21%64%21%—
Valentino Rossi101%7%19%67%10%5
Alex Rins111%4%14%55%20%4
Cal Crutchlow120%3%8%42%28%13
Miguel Oliveira130%2%8%45%13%6
Jack Miller140%2%5%33%26%9
Tito Rabat150%1%4%30%19%16
Iker Lecuona160%0%2%15%46%—
Takaaki Nakagami170%0%1%17%12%8
Andrea Dovizioso180%0%1%14%12%11
Bradley Smith190%0%1%10%14%17
Stefan Bradl200%0%1%7%21%18
Alex Marquez210%0%0%5%15%15

What the sprint changed

C13b

Who rises and who drops in the race forecast after the sprint.

Pending · no data yet

Sprint pace

Pending · no data yet
Preview

Before the race

What to expect this weekend: race and qualifying outlook, the weight of the grid and the weather.

Who rules each sector

C6
S1 · P. EspargaroS2 · QuartararoS3 · P. EspargaroS4 · P. Espargaro

Finish line (approximate) S1 S2 S3 S4 · 5,401 m per lap

Approximate sectors: estimated from the time spent in each sector (typical error 5 to 10% of a lap) until we have the official split points.

© OpenStreetMap contributors

Fastest per sector: 2020

Median gap to the fastest rider in each sector within each session, across all seasons at this circuit; active riders only. The name on the layout is the sector leader. Sector split points on the map are approximate.

A track for grid position, or an open one?

C15

A grid-position track: the grid rules here and it is very hard to come back.

81/100
Position index
40%
Pole wins
60%
Front row on the podium
0.78
Grid ↔ result

When two teammates disagree between pace and grid, pace wins 100% of the time (between 44% and 100%; 3 cases).

Descriptive, over 5 races (2018–2026). 100 = the track where the grid matters most; 0 = the most open. Within a team, practice pace tells who will finish ahead 7 times in 10, but when the faster teammate qualifies behind, they finish behind 6 times in 10: grid position weighs more than pace.

The last race here in numbers

2019 edition

34
Overtakes
0
Lead changes
1 leaders
20/20
Laps led by the winner
Marc Marquez
2.452 s
Closest finish

Comeback of the day: Andrea Iannone, from P23 to P17.

Longest battle: Alex Rins vs Jack Miller (19 laps).

Overtakes are counted at the finish line: moves undone within the same lap are not seen. It is a measure of movement, not an official statistic.

Race pace at the last edition

C1

2019 edition

RiderPaceGapDeg. s/lapRearn
Marc Marquez1:57.677—+0.210Soft18
Alex Rins1:57.697+0.020+0.217Soft17
Andrea Dovizioso1:57.762+0.085+0.226Medium18
Cal Crutchlow1:57.953+0.276+0.729Soft18
Jack Miller1:58.068+0.391+0.105Soft18
Valentino Rossi1:58.146+0.469+0.508Soft18
Danilo Petrucci1:58.350+0.673+0.574Medium18
Fabio Quartararo1:58.353+0.676+0.275Soft18
Hafizh Syahrin1:58.444+0.767+0.491Soft4
Takaaki Nakagami1:58.487+0.810+0.359Soft18

Net race pace: median of clean laps, excluding lap 1, cancelled laps and pit laps. Degradation mixes tyre, fuel and traffic.

Winners here

  • 2026Marc MarquezDucati
  • 2025Marc MarquezDucati
  • 2020Brad BinderKTM
  • 2019Marc MarquezHonda
  • 2018Andrea DoviziosoDucati
  • 2017Marc MarquezHonda
  • 2016Cal CrutchlowHonda
  • 2015Jorge LorenzoYamaha

Attrition here

Average here 16% · global 19%
YearDNFs%
20263/2015%
20253/2114%
20203/2114%
20193/2313%
20185/2520%
20173/2313%

Tyres at the last edition

2019 edition

RearShareRel. paceDeg. s/lapWinsPodiumsAvg. pos.
Soft86%+0.80%+0.0981210.7
Medium14%+0.57%+0.129019.3

Rear compound in the race. Pace is relative to the best of the session; degradation includes fuel and traffic, so only compare within the same race.