Zverev, Federer in semis

Alexander Zverev set up a semifinal meeting with Roger Federer at the ATP Finals in London by defeating John Isner 7-6 (5), 6-3 on Friday. The 21-year-old German is the youngest player to reach the semifinals at the season-ending tournament since 2009 and the first from his country since 2003. Both Isner and Marin Cilic, who played group winner Novak Djokovic in the late match, were eliminated by the result. Djokovic will face Kevin Anderson in today’s other semifinal match.