Alexander Zverev leveled with Cameron Norrie at the Cincinnati Masters 1000, forcing a third set. Play continued past 1 a.m. local time.

Rain the previous day had pushed the round into the early morning, leaving a delayed schedule and sparser stands.

Zverev is the top seed, with withdrawals by Jannik Sinner and Carlos Alcaraz paving the way for the German to lead the draw.