Top seed Jannik Sinner advanced to the quarter-finals of the ATP Montreal Masters, defeating Alejandro Tabilo 6-4, 6-3 in 80 minutes. Sinner's victory follows a series of rain delays that disrupted play, and he will face Andrey Rublev next. This year marks Sinner's first attempt at defending his Masters 1000 title, having achieved significant success with a 24-1 record on hard courts. Former finalist Kei Nishikori also progressed by defeating Nuno Borges, while several high seeds, including Daniil Medvedev and Stefanos Tsitsipas, were eliminated. Sinner's win is particularly encouraging after missing the Paris Olympics due to tonsillitis, as he aims to improve his serve ahead of the US Open. The event is on a tight schedule, concluding on Monday due to Olympic commitments.