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.

Dubai Duty Free Tennis Championships reveal elite women's line-up
FIFA receives record 500 million ticket requests for 2026 World Cup
'Gutted' Robertson steps down as All Blacks coach after review
Morocco beat Nigeria on penalties to set up Cup of Nations final v Senegal
Mitchell century helps New Zealand level ODI series with India