Phelps, a Baltimore native, is a longtime fan of the Ravens. During a 2004 game, the team brought him as their special guest, and again in 2012, the Olympian was honored at a home game when he lead the team's offense onto the field.

Marlon Humphrey and other Ravens want to learn how to swim. Luckily for them, they landed the best teacher available: Michael Phelps.

Michael Phelps is both the owner of 23 Olympic swimming gold medals and a Baltimore native and big Ravens fan, so he's the man some Ravens players appealed to when they wanted to learn to swim.