Alexander Zverev defeated Terence Atmane 7-6, 7-6 in Cincinnati, taking both sets in tie-breaks. The match was a battle of breaks, with the server struggling throughout.
Zverev fell behind 0-3 in the first set after Atmane broke in games one and three, but responded immediately and the set swung from 3-3 to 6-6 with a series of breaks before Zverev took the tie-break. The second set was even wilder: every game through 6-6 went against the server. Zverev edged the decisive tie-break 7-6 to close out the match.
The numbers underline the chaos: there were 22 breaks of serve in total, 11 for each player. Zverev was broken as often as Atmane, yet won both tie-breaks to advance.