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Wednesday's edition of Tennis Channel Live revisited the top moments of 2020, including Sofia Kenin's Australian Open Cinderella **run.

Here are some of today's show highlights:

—Roger Federer undergoes second right-knee surgery

—Credit One Bank Invitational team captain Bethanie Mattek-Sands discusses the Charleston exhibition

—Reaction To leaked WTA proposed schedule, and to Danielle Collins's disapproval of Novak Djokovic on the US Open

Watch in full here: