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.

Cornerback Marlon Humphrey posted a video on social media asking 23-time Olympic swimming champion Michael Phelps — a Baltimore native — for swimming lessons. The video includes Humphrey, tackle Ronnie Stanley, safety Kyle Hamilton and tight end Charlie Kolar standing in the pool.

The Baltimore Ravens invited Olympic Icon Michael Phelps to give swimming lessons to the players who never learned during NFL training camp.