Seahawks quarterback Russell Wilson has already wished his teammate Marshawn Lynch well after the running back appeared to announce his retirement Sunday. With Wilson's mentor Peyton Manning also possibly calling it quits before the start of next season, Wilson wrote a letter to the newly crowned Super Bowl champion Monday in the Players' Tribune.
MORE: Where Broncos rank among Super Bowl winners | Manning rides Broncos to career pinnacle
Wilson, who was a participant in Manning's quarterback camp in high school, sent his gratitude to one of the greatest quarterbacks to play the game with a touching letter titled, "If This Is It.