Mateus character: #75 on ND in movie

Rating: Null/10 (3 March 2009)

This might be a reach as it is not listed anywhere, but isn't Mateus (aka #75 who starts the "Rudy" chant at the end of the movie) played by Patrick Warburton?
The only listed Notre Dame players in the current IMDb credits are Al Snow and Matt Gallini, but as far as I can tell those two actors play two other players from the team.
Any thoughts?? Can anyone confirm this??
Shouldn't the actor who played Mateus be credited? The "Rudy" chant scene at the end of this movie is one of the most epic sports movie scenes of all time. I found it extremely odd that it was (and might still be) so difficult to pin down who exactly played him.