There's some fake Red Sox fonts out there. I'm unsure about legality, but on of the less well copied ones might be far enough off to be legally considered different.

Check out Hoefler and Frere-Jones or Font Bureau, they’ve done some sports related designs along with some great revivals of the good old stuff people think of as sporty.

Unless you're focusing on a particular team, type that speaks generically of (American) sports include the thick brush-script cursives (which are mostly associated with baseball, though not exclusively) and blocky display types of the sort once used for jersey numbers. What are you looking for?

There’s no reason clean cut and loud can’t go together. Bold condensed grotesques exist for a reason! If you really can’t come up with anything, go to a hockey game, sit in the second row, and then get tanked and heckle the refs. That always inspires me.