All Rankings

Hayden Mammenga

PRO-AM
Rating
1527
Overall Rank
#36
PRO_AM Rank
#11
Uncertainty (±RD)
35

Rating History

Skill rating after each GT3 race. The shaded band is the uncertainty range (±RD); it narrows as a driver races more often.

How this rating is calculated

This is a Glicko-2 rating — the same family of system used for chess and for iRacing's own iRating. Every GT3 league race is treated as a head-to-head event: you gain rating for finishing ahead of drivers and lose it for finishing behind, scaled by how strong those drivers are. Beating a high-rated Pro is worth far more than beating a backmarker.

  • One combined ladder. Pro and Am drivers race the same car on the same track, so they are rated together. Division is just a label; the rating is earned on track.
  • Recent races count more. Each race is weighted by age (half-life 8 months), so current form drives the number. Only the last seasons are counted.
  • Uncertainty (RD). New or returning drivers carry a high ±RD until they have raced enough. The floor (1457) is the rating minus 2×RD — a conservative estimate used for promotion decisions so a hot streak on a small sample can't promote someone prematurely.

Counted races: 34 total, 34 in the last ~year.

Race-by-race

DateSeasonTrackFinishWeightRating after
2026-10-06Season 16Watkins Glen InternationalP13 / 230.991527 ±35
2026-09-29Season 16Hockenheimring Baden-WürttembergP8 / 230.971524 ±35
2026-09-22Season 16Road AtlantaP14 / 300.951483 ±35
2026-08-18Season 15Sebring International RacewayP22 / 260.871450 ±36
2026-08-11Season 15Algarve International CircuitP11 / 200.851494 ±37
2026-08-05Season 15HungaroringP10 / 170.831485 ±38
2026-08-04Season 15Red Bull RingP13 / 180.831473 ±37
2026-07-28Season 15Indianapolis Motor SpeedwayP11 / 170.821486 ±37
2026-07-21Season 15Road AmericaP25 / 340.801484 ±36
2026-07-15Season 15Adelaide Street CircuitP6 / 280.791526 ±38
2026-07-14Season 15Mount Panorama CircuitP17 / 280.781447 ±39
2026-07-07Season 15Circuit de Spa-FrancorchampsP19 / 360.771439 ±41
2026-05-26Season 14Circuit des 24 Heures du MansP12 / 190.681415 ±44
2026-05-20Season 14Autodromo Nazionale MonzaP14 / 180.671397 ±44
2026-05-19Season 14Autodromo Internazionale Enzo e Dino FerrariP11 / 170.671395 ±44
2026-05-12Season 14Silverstone CircuitP14 / 200.661377 ±44
2026-05-06Season 14Circuit de Spa-FrancorchampsP15 / 200.641372 ±45
2026-05-05Season 14Brands Hatch CircuitP16 / 190.641372 ±45
2026-04-21Season 14Nürburgring CombinedP18 / 240.621384 ±46
2026-04-07Season 14Road AmericaP18 / 280.591389 ±45
2026-04-01Season 14Virginia International RacewayP20 / 250.581362 ±47
2026-03-31Season 14Miami International AutodromeP18 / 230.581368 ±49
2026-03-24Season 14Sebring International RacewayP10 / 200.571372 ±50
2026-03-10Season 13Autódromo José Carlos PaceP10 / 160.551330 ±52
2026-03-04Season 13[Retired] Barber Motorsports ParkP12 / 130.541316 ±53
2026-03-04Season 13Watkins Glen InternationalP11 / 140.541331 ±53
2026-02-24Season 13Suzuka International Racing CourseP11 / 210.521333 ±53
2026-02-03Season 13Mount Panorama CircuitP22 / 320.491288 ±53
2026-01-28Season 13Circuit de Barcelona CatalunyaP20 / 270.491273 ±58
2026-01-28Season 13Circuito de NavarraP27 / 280.491276 ±62
2026-01-20Season 13Circuit ZolderP18 / 240.471361 ±69
2026-01-14Season 13Daytona International SpeedwayP23 / 300.471378 ±77
2026-01-14Season 13Canadian Tire Motorsports ParkP15 / 260.471438 ±96
2026-01-06Season 13Daytona International SpeedwayP18 / 300.461423 ±132