Tennis Identity

Put me in coach, I’m ready to play

That's the old refrain from the John Fogerty hit "Centerfield," but it also applies to tennis and the many coaching changes that seem to pop up from time to time.  Justin Gimelstob announced  he'll be coaching top American pro John Isner for the 2015 season.

Gimble

 (Photo from @justingimbelstob.)

Speaking from his home in Tampa, FL where he is currently training during the offseason, Isner said, “I’m really excited to start working with Justin. He has so much experience within the tennis business and I’ve long respected his knowledge of the sport. I think it will be great for me to have a new perspective helping me with my game."

World No. 6 Agnieszka Radwanska has a new coach, too- and it's a familiar name. Aga tweeted, "So happy to announce @Martina as the newest member of my coaching team!"  Martina, as in Navratilova. On CNN.com, Martina said "I am really excited about this opportunity to join Agnieszka's team — I can't wait to get started."

American Ryan Harrison also has a new coach- Grant Doyle, who he worked with in 2012. Harrison is ranked 190 in the world. And American player Sloane Stephens is training with Genie Bouchard's former coach, Nick Saviano- though Tennis.com says "the relationship isn't clear."

One former champion who does NOT want to get into the coaching act, though, is Pete Sampras. Quoting a Tennis.com story, Sampras says "Boris and Stefan, they are a little bit older, have kids a little bit older, they are open to travel. I am not into traveling at the moment, at least more than a couple of weeks a year."

In an off-court move, Canadian star Genie Bouchard has left Lagardere, and signed with WME/IMG. She will be managed by Serena Williams' agent, Jill Smoller. Bouchard also signed on with IMG Models.