Its been like that all season. I'm not sure why, bandwagoners or something else, but the left field has devolved into a really nasty place. I would never bring a child to that section, which is a shame because growing up the bleachers were my favorite place to sit. There's nothing wrong with having a few drinks at the game and enjoying yourself, but whats going on in the left field bleachers almost every night is worse than anything I've even seen at Wrigley. And yeah that wave sucks and it happens multiple times per game in intense situations. Always eminating from left field.