The two Czechs had fun at the expence of their mutual sponsor, Tag Heuer.
The former doubles World No.1 was also a Top-5 singles player and a Roland Garros runner-up.
The Swiss is hungry to crack another big milestone but doesn't want to let it ruin the vibe.
"Tsitsipas takes the towel after an ace or double fault," says Alexander Zverev.
For the fifth year in a row, players pick Indian Wells as top Masters event.
This old dude with a wood racquet is actually an old friend.
Hall of Famer reveals his favorite players and the best he's seen.
