Jack Sock is the first American to reach the Tour Finals since Mardy Fish in 2011. Christophe Petit Tesson / EPA
Jack Sock is the first American to reach the Tour Finals since Mardy Fish in 2011. Christophe Petit Tesson / EPA

Tennis

Paris Masters winner Jack Sock surprised to swap holidays for World Tour Finals

American beat qualifier Filip Krajinovic 5-7, 6-4, 6-1 in Paris final on Sunday to qualify for year-end tournament in London

Agence France Presse

November 06, 2017