Serena Williams is calling it a career.
Ramón Urías hit a three-run homer in the first inning, and Anthony Santander, Ryan Mountcastle and Austin Hays also went deep.
Canada's Leylah Fernandez made her return to the court Monday night with a 6-4, 6-7 (2), 6-3 win against Australian Storm Sanders.
Players who can't play because of their vaccination status won't be paid for missed games.