The heaviest single measure isn't how close two drivers are, it's how unpredictable the fight is. Whoever finishes three seconds behind you every single race is a benchmark, not a rival - so Head to head scores highest when neither driver reliably beats the other, and falls to nothing when one of them owns the pairing.

Finish gap is how near each other they take the flag, Wheel to wheel the share of laps they spent within 2 seconds on the road - reconstructed from lap times, not estimated - and Standings how close they stay on points, measured against the field's own spread so a scrap for eleventh counts as much as one for the title.

Race pace and One-lap pace compare both drivers as a percentage of the reference for the class each was driving, so a GT3 and a GT4 driver are judged on how good they are relative to their own machinery.

Same class is the share of their races together run in the same class. Class is still not a filter - drivers move between classes, and you race whoever is next to you - but it carries real weight, because two drivers in different classes are in different championships and can never actually finish ahead of each other in a table that counts. A pair who only ever meet across a class divide can still be rivals; they just have to earn it everywhere else.

Every organised race counts here, including the practice series - a race you spent scrapping with someone is a race you spent scrapping with someone, whether or not a championship counted it. That is the one place this section differs from the career stats at the top of the page, which leave practice series out. The exception is Standings, which only reads championship series: the practice series has no title on the line, so a points gap there measures who turned up rather than who is chasing whom. Casual lobbies are excluded entirely: a race only counts once an admin has given it a series and a scoring scheme.

The score is scaled down while there are few races to go on - which is why an early-season rival is marked provisional.