Pre-game chants do get the players pumped up. Just being in the atmosphere and just knowing its gametime is going to have your heart racing, and the pre-game chant is like injecting Adrenaline directly to your heart
We are talking about professionals, not some high school kids. These guys been playing ball all their lives......I think it may hype up some guys, but it seems like some stuff, like Ray Lewis says, is just overkill.