Djokovic lost 6-4, 6-3 to Alexander Zverev in the final of London on Sunday.

Djokovic won 6-2, 6-2 over Kevin Anderson in the semifinals of London on Saturday.

Djokovic won 7-6 (7), 6-2 over Marin Cilic in his third round robin match in London on Friday.

Djokovic won 6-4, 6-1 over Alexander Zverev in his second round robin match in London on Wednesday.

Djokovic won 6-4, 6-3 over John Isner in his first round robin match in London on Monday.