Man I played more Blitzball than I did the actual content of FFX. Seriously spent too much time getting crap for Wakka (that's how it's spelled right?). I found out early you get XP for completed actions so as soon as I got the ball I would swim to my nearest teammate and quick pass between them several times until a defender got close and then I'd hail mary pass to Ditto or whatever his name was or Tidus for an easy goal. Rinse and repeat the entire round and I would level several times per half.

Since they really only gain XP on completed actions on YOU and not against other teams (If I remember correctly or they at least only get a small XP boost per game)...it was lopsided real quick. Keepa becomes a real beast of a goalie and THE best one at 99.