French Open: Federer, Serena advance; Andreescu upset

June 1 (UPI) -- Americans Serena Williams and Sofia Kenin defeated their first round foes while Roger Federer won his first Grand Slam match in 16 months to advance to the second round at the 2021 French Open. Federer bounced Denis Istomin 6-2, 6-4, 6-3 in one hour, 33 minutes...