2018 BNP Paribas WTA FINALS,Singapore Karolina Pliskova (CZE) defeated Petra Kvitova (CZE) 63 645 and advances to the semifinals. Photo © Ray Giubilo

2018 PARIS ROLEX MASTER Men's Final Karen Khachanov (RUS) defeated Novak Djokovic (SRB) 75 64 Photo © Ray Giubilo

2018 Nitto ATP FINALS FINAL Alexander Zverev (GER) defeated Novak Djokovic (SRB) 64 63 Photo © Ray Giubilo This image may not be reproduced or sold to third parties.

2018 Nitto ATP FINALS Novak Djokovic (SRB) defeated Alexander Zverev (GER) 64 61 Photo © Ray Giubilo This image may not be reproduced or sold to third parties.