Watch highlights of Alexander Zverev 5 sets win over Frances Tiafoe in US Open 2019 second round.

Watch how Taylor Townsend stuned Simon Halep in US Open 2019 second round, saving a match point to get trough

Watch highlights of Stan Wawrinka victory over Jeremy Chardy to reach the third round of this US Open 2019.

Watch how Novak Djokovic battled through shoulder pain to beat Juan Ignacio Londero in US Open second round.

Watch Roger Federer rallying to win against Damir Dzumhur in US Open 2019 second round.

Watch highlights of Serena Williams' fight against her young fellow countrywoman Catherine Mcnally (17 yo) to join third round of this 2019 US Open.