The Williams sisters faced off in the Top Seed Open on Thursday, with Serena clinching a spot in the quarterfinals after rallying to prevail in three sets.
Djokovic will be competing for his 18th Grand Slam title, and reigning champion Rafael Nadal and five-time U.S. Open winner Roger Federer won't be in the field.
Should the 2020 U.S. Open have an asterisk next to it, given the circumstances? Plus the tennis equivalent of golf's Jordan Spieth, the possible advantages for players who were already infected with COVID-19 and much more.