A football coach thinks that Stefon Diggs, a really good football player, might not be as fast as he used to be.
Diggs started the year playing amazing, but then he didn't do as well later in the season.
Because of this, Diggs moved to a new team, the Houston Texans, where he wants to play really well again.
Even though some people think he's getting slower, Diggs is still a really good player and he wants to show everyone that he can still play great!
