The record single-day attendance at the 2026 Cincinnati Open was 30,479 fans.
That crowd gathered on Saturday, August 15, making it the largest single day in tournament history. The figure was one of several attendance records established during the expanded event.
The same Saturday also produced the tournament’s record day-session attendance, while a separate night session later set its own record. These figures measure different attendance categories, so they should not be added together.
The single-day mark formed part of a broader attendance surge. Overall attendance reached 300,288, and the tournament became the first Cincinnati Open to attract more than 300,000 visitors.