Coaching guru knows how to calm Coco

Craig Kardon coached Martina Navratilova to the 1990 Wimbledon title, led Lindsay Davenport into the top 10 for the first time and drove Mary Pierce to No 5 in the world.

Now he's working with Coco Vandeweghe, guiding her into her first ever Grand Slam semifinal at the Australian Open. And the American is glad to have him in her corner.

After upsetting seventh seed Garbine Muguruza at Melbourne Park on Tuesday, Vandeweghe credited Kardon for helping her deal with the pressure-cooker atmosphere at the year's first Grand Slam.