Overview
- Gael Monfils squandered four match points before succumbing 6-4, 4-6, 7-6 (7/3) to qualifier Tomas Barrios Vera in near-35°C heat.
- Tomas Barrios Vera celebrated his first Masters-level victory and ended a seven-match losing streak dating to February.
- The 38-year-old French veteran struck a career-high 15 double faults, undermining his performance in the deciding set.
- Monfils confirmed that this defeat marks his last appearance at the Toronto Masters after 14 participations.
- Barrios Vera advances to face Alex Michelsen in a second round made more open by the absence of four top-10 players, including Jannik Sinner and Carlos Alcaraz.