Aleksandar Kovacevic vs Karen Khachanov — R128 — Cincinnati Open

The betting market's 68 percent sat with Karen Khachanov, who hit 16 aces and saved 10 of the 11 break points he faced. Aleksandar Kovacevic, ranked 95th, was the more efficient man behind the first delivery, winning 46 of 54 points there, and broke twice in the second set, the first coming in game 4 for 3-1. Neither man broke serve in the third, where Khachanov's 15 unforced errors piled up and the tiebreak went the other way. It ran 2 hours 16 minutes, with one match point saved by the favorite along the way; the result ends a six-match losing run for Kovacevic and sets up a meeting with No. 31 Brandon Nakashima.