Jannik Sinner, Gabriel Diallo play through fire alarm at Cincinnati Open

Jannik Sinner

Sinner, Diallo play through fire alarm at Cincinnati Open

Sinner is defending champion in Cincinnati

2025 Getty Images Jannik Sinner is looking to successfully defend an ATP Masters 1000 title for the first time this week in Cincinnati. By ATP Staff

World No. 1 Jannik Sinner has seen a lot in his young career. But Monday night at the Cincinnati Open is surely a first for the World No. 1 Italian.

Play was halted in the second game of the second set in his third-round match with Gabriel Diallo when a fire alarm in the 1899 club grandstand began to sound. After a delay of several minutes, the players agreed to play through the sound and flashes, playing four points before the alarm ended.

The start of Sinner’s evening match had been delayed by a late finish to Taylor Fritz’s match with Lorenzo Sonego, which endured a 75-minute delay when the venue lost power.

Sinner has taken the first set 6-2 against the 6’ 8” Canadian in their first Lexus ATP Head2Head meeting after winning six straight games from 0-2 in the first set.

Playing his first tournament since winning his first Wimbledon title, Sinner is 27-3 on the season, according to Infosys ATP Stats. Just 10 wins away from 300 career wins, Sinner earlier in the tournament became the second player to qualify for November's Nitto ATP Finals, where he will be the defending champion.

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