Alex Michelsen of the United States upset third-seeded Lorenzo Musetti of Italy 3-6, 7-6 (4), 6-4 on Thursday in the third round of the National Bank Open.

Alex Michelsen on Thursday rallied for a 3-6, 7-6 (7/4), 6-4 upset victory over third-seeded Lorenzo Musetti in the men’s singles, converting his seventh match point to reach the fourth round of the Canadian Open.

Alexei Popyrin looped an unexpected backhand before raising his arms in stoic victory. The emotions of the moment were in stark contrast to what he felt just seconds earlier — and throughout a frustrating first set.