Sports fans are known for getting some really crazy tattoos. Just click on one of the two links below to see a bunch of the worst NBA and NFL fan tattoo fails of all time. But, they're not all bad.

Last night, ESPN writer Darren Rovell asked fans to submit photos of their sports-related tats to him on Twitter. And, within just a few hours, he collected a bunch of pretty cool ones from passionate fans (some of them were admittedly awful, but it was still cool to see just how far sports fans will go to rep their team). We assembled a collection of some of our favorites here. Check them out, and then head over to Rovell's Twitter page here to see more.

RELATED: Gallery: Hilarious NBA Fan Tattoo Fails

RELATED: Gallery: Hilarious NFL Fan Tattoo Fails

[via Darren Rovell]