The Canadian comes in as a reliever and knocks off Danielle Collins.
Sofia Kenin showed sharp form topping Venus Williams.
Sam Querrey, Monica Puig lift Rollers past two-time defending champions.
Björn Borg's son, Leo, joins Nadal Academy.
New York Empire score second straight win.
Former Wimbledon winner says he's "free at last" from virus.
Hall of Famer leads New York Empire past Philadelphia Freedoms.
