Mrs. October: Kuznetsova’s run continues with second WTA Finals win

In a back-and-forth battle, the veteran Russian held off Karolina Pliskova.

WATCH: Post-match reaction to No. 1 Kerber’s commanding win over Halep

The German received the year-end No. 1 award in a post-match ceremony.

Tie Break Tens showed that tennis shouldn't be afraid to experiment

Alternative formats are trying to cut some of the fat from the sport. 

WATCH: Madison Keys hits brilliant winner in maiden WTA Finals victory

Keys beat Cibulkova, 6-1, 6-4, to improve to 1-1 in the Red Group. 

Elina Svitolina complains of online abuse from Russians in Moscow

"It was a very tough tournament, and I don't think I will come back," she said. 

Tennis Podcast

Final Thoughts on Kyrgios; First Look at WTA Finals

Steve Tignor and Ed McGrogan dig into a busy week of tennis news, on and off the court.