Which player did you expect to reach a higher peak, but didn't quite make it?
Nick Kyrgios:Kyrgios is best known for beating Nadal at Wimbledon when he was 19, and he has also defeated all members of the Big Three in Masters tournaments.
Stefanos Tsitsipas:Tsitsipas has beaten Nadal and Federer at the Australian Open and Federer at the ATP Finals, and has defeated all members of the Big Three in Masters events.
Dominic Thiem:Thiem beat Djokovic twice at the French Open, Nadal at the Australian Open, defeated all members of the Big Three in both Masters and ATP Finals events, holds a winning head-to-head record against Federer, and has the best head-to-head record against the Big Three among this group.
Casper Ruud:Even the weakest player among them once managed to beat a 37-year-old Djokovic at a Masters. #sport