Guttenbeil played at second-row forward in the Warriors' 2002 NRL Grand Final loss to the Sydney Roosters. He went on to become one of the longest serving Warriors, playing eleven seasons with the club and became the second player to ever receive a testimonial from the club, the first being Stacey Jones.
Guttenbeil played as a second-row forward in the Warriors' 2002 NRL Grand Final loss to the Sydney Roosters. He became one of the longest-serving players for the team and received a testimonial from the club, becoming the second player to do so after Stacey Jones.