The pair had to be separated by the umpire, and the bad blood lingers.
The world No.1 is getting worldwide acclaim, and deservedly so.
The Seoul native won a doubles match in his home city.
Get read for Ons Jabeur vs. Emma Raducanu at the Mubadala World Tennis Championship.
Gainbridge Insurance signs on as Billie Jean King Cup title sponsor.
World No. 1 Iga Swiatek headlines the WTA 500 tournament.
Angelique Kerber is determined to return to the pro tour after she gives birth to her first child.
