If Tennis is your "slow gainer" for experience towards PRO- here is something i tried TODAY and went from 300 XP to 1100 xp in NOTHING!
All you have to do is this: When you are deciding players/ teams- put yourself on the same team as YOURSELF! so there will be 2 of you playing on the same team- and you will control both of them. Then. play best of 5 and Win. Winning will get you between 150 and 200 XP points PER ROUND!
Let me know what you guys think.