Olympian champion Michael Phelps has taken on the ambitious task of teaching the Baltimore Ravens football team how to swim.

For a team chasing its own championship dreams, Michael Phelps’ visit was more than a celebrity cameo. It served as an opportunity for the Ravens to absorb unique insight from a local legend who truly understands what it takes to sustain greatness over decades.

In a social media video, Ravens Marlon Humphrey, Ronnie Stanley, Kyle Hamilton and Charlie Kolar invited Phelps, a Baltimore native and longtime Ravens fan, to visit their training camp. They said that one in three Ravens players could not swim.