Zverev to Face Federer in Semifinals of ATP Finals

Alexander Zverev of Germany celebrates winning match point against John Isner of the United States in their ATP World Tour Finals singles tennis match at the O2 Arena in London, on Nov. 16, 2018. AP Photo/Tim Ireland

LONDON—Alexander Zverev set up a semifinal with Roger Federer at the ATP Finals by defeating John Isner 7-6 (5), 6-3 on Nov. 16.

Zverev is the youngest player at 21 to reach the semifinals since 2009 and the first from Germany since 2003.