French Open finalist Alexander Zverev faces the multi-time French Open champion Novak Djokovic in the quarterfinals at Roland Garros. Alexander Bublik faces long odds but carries the spirit of the underdog against Jannik Sinner in the other men’s quarterfinal taking place on Thursday.

The French Open quarter-finals continue on Wednesday with top seed Jannik Sinner in action, Novak Djokovic facing his first true test when he takes on Alexander Zverev and an all-American clash between Coco Gauff and Madison Keys.

For all of Novak Djokovic’s titles (100 in all) and Grand Slam trophies (24) and weeks at No. 1 (428, more than anyone else in tennis history), for all of his talent and determination, the guy still can find himself worrying about what is going on with his game.