I left the Pokemon Centre and went to the Flower Shop. I talked to the women and she gave me the Squirt Bottle. I then went North and went through the gate. I battled all the trainers in the path and the trainers around the fence and picking up items as I went along. I then went into the gate and took the left enterance. I arrived at the entrance of the Poke-Athlon. I met a man named Magnus and his Poliwrath. He talked to me for a bit and went inside. I also went inside and that's where I met Whitney again. She gave me a Jersey. She then ran off. I healed and went to the National Park.