Not surprisingly, the meeting of the two superstars will lead off the first night session of the tournament on Monday at Arthur Ashe Stadium (after an opening ceremony featuring the Tony winners Ben Platt and Ali Stroker at 7 p.m.).

20 in a breakout year, winning her first singles title and beating Serena Williams to reach the fourth round at the French Open, her best result at a Grand Slam tournament.

While many describe her as a grinder, Kenin’s ability to change up her shot selection off the baseline will work well against Vandeweghe, who often attempts to move into the net to avoid extended rallies.

Maria Sakkari of Greece, above, beat Petra Kvitova, Aryna Sabalenka and Camila Giorgi at the Cincinnati tournament before losing to Ashleigh Barty in a quarterfinal.CreditMatthew Stockman/Getty Images

One of the great things about the first week of the Open is the sheer number of courts around the grounds on which fans can watch high quality Tennis with minimal waiting time.

Maria Sharapova, left, and Serena Williams will lead off Monday’s night session at Arthur Ashe Stadium.CreditCreditThomas Samson/Agence France-Presse — Getty Images