Not only are Novak Djokovic and Rafael Nadal playing for the French Open title on Sunday, they are jostling for position in the race to be crowned the 'GOAT'.
The number of Grand Slam titles is the most obvious and easiest metric for those who wish to determine - and not everyone does - which man is the Greatest Of All Time.
Spanish second seed Nadal, 34, is looking to land a 13th title at Roland Garros, which would move him level with Roger Federer's all-time leading men's tally of 20 Grand Slam singles victories.
Hot on their heels is top seed Djokovic.