Since rallying to defeat top-ranked Novak Djokovic on his way to winning the Tokyo Olympics, Alexander Zverev has taken his game to another level at the US Open.

The 24-year-old German fourth seed advanced to his seventh Grand Slam quarter-final, and fourth in the past five Slams, by dispatching Italian 13th seed Jannik Sinner 6-4, 6-4, 7-6 (9/7) on Monday.