ATP roundup: Karen Khachanov, Jakub Mensik to meet in Doha final

(Photo credit: Jerry Lai-USA TODAY Sports)
No. 2 seed Karen Khachanov of Russia won a marathon first-set tiebreaker and advanced past Australia's Alexei Popyrin 7-6 (12), 6-2 in the semifinals of the Qatar ExxonMobil Open on Friday in Doha.

Khachanov will face Jakub Mensik in the final after the Czech native beat Frenchman Gael Monfils 6-4, 1-6, 6-3.

Khachanov won the first four points of his first-set tiebreaker but le