Andy Murray makes his return to singles action for the first time since his hip surgery at the Cincinnati Masters tennis.
The former world number one hasn't played a singles match since losing in the first round of the Australian Open in January.
He takes on Frenchman Richard Gasquet.
Meanwhile, Rafael Nadal has announced he will not compete at the Cincinnati Masters after winning the Rogers Cup in Montreal on Sunday.
The hard court season is underway ahead of the US Open which begins on August 26.

Arsenal miss chance to go six points clear with draw at Brentford
India thump Namibia ahead of Pakistan clash
Italy crush Nepal in maiden T20 World Cup victory
Dubai Duty Free Tennis Championships reveals major expansion plan
