Daily Bagel: Highlights of Juan Martin del Potro's offseason training

http://www.youtube.com/watch?v=2G-76QbaAy8 The Daily Bagel is your dose of the interesting reporting, writing and quipping from around the Internet. • Video:

http://www.youtube.com/watch?v=2G-76QbaAy8

The Daily Bagel is your dose of the interesting reporting, writing and quipping from around the Internet.

• Video: Some highlights of Juan Martin del Potro's offseason training. From this video, we can assume that he wore a shirt about 30 percent of the time.

• In this quick hits video with Serena Williams, she reveals, among other things, that she would like to trade places with her dog, Chip.

• Sloane Stephens has hired Paul Annacone as her full-time coach for the 2014 season.

"I'm happy to add Paul as my coach for the 2014 season," Stephens said. "His success as both a player and coach speaks for itself. We had a great preseason working together and I'm excited for the opportunity to continue working together."

• Defending Australian Open champion Novak Djokovic returns to Centre Court for the first time since his victory.

• Roger Federer's family (with a baby on the way) made the trek to Australia.

• Larry Ellison, owner of the BNP Paribas Open and its venue, the Indian Wells Tennis Garden, has been named Tennis News' Person of the Year.

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'whack heard 'round the world.'