What all do you have to do to get the Sigil and Wakka's weapon, or whatever the hell else you can get from blitzball?

I kinda like it. This is the first time I've played X, and it seems alright to me. It's kinda weird that it's in the save spheres, though, so you can be in the middle of trying to get out of some fiend-infested forest and be like "hey, what the hell, I could go for a game".