Extract all files from the archive into the directory with the game.
Run the trainer.
Start the game without closing the trainer.
During the game, press the keys indicated in the trainers.
Virtua Tennis 2009: Trainer (+3) [1.0] Free Download
F6 – Unlimited Stamina [OFF]
F7 – Add 10000 $ to money
F8 – Freeze Minigames Timer