Andy Murray has some top tips for returning serve on this week's show.
Last week the Wimbledon and US Open champion gave us a serving masterclass but on Saturday's show he'll be giving us some pointers for receiving serve.
Also on the show will be...
STEVE BROWN: Great Britain's wheelchair rugby captain in the studio showing you a variety of passing skills you can practice at home and use in a range of different sports. He'll also give us the lowdown on his sport.
LIZZIE SIMMONDS: The backstroke swimmer has competed at both the 2008 and 2012 Olympics and she'll tell us about what it was like competing in London last summer. Lizzie is going to take on our Change Your Aim basketball challenge too.
DI V DARREN: On last week's show Darren was unable to beat Di's Change Your Aim score but we'll have a brand new challenge for our pair of presenters this week - make sure you don't miss it!
GAME CHANGERS NEWS: Our Game Changers presenters will be bringing you the big stories from the past seven days
Game Changers: 9am, Sat, Sky Sports 1