The 2026 Cincinnati Open was the seventh ATP Masters 1000 event of the season.
The ATP Masters 1000 series consists of the highest-level regular men’s tournaments below the Grand Slam events and the year-end ATP Finals. Cincinnati occupies a late-summer position in the series, following the European clay-court and grass-court portions of the calendar.
Its timing places it in the North American hard-court swing immediately before the US Open. Players often use Cincinnati to sharpen their form and ranking position on the same broad type of surface used at Flushing Meadows.
The number refers to the sequence of Masters 1000 tournaments during the 2026 season, not the tournament’s edition number or its draw size. Cincinnati itself is one of the oldest tournaments in professional tennis.