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 for the Warriors in their 2002 NRL Grand Final loss to the Sydney Roosters. He went on to be one of the longest-serving players for the team, playing eleven seasons with them and becoming the second player to receive a testimonial from the club, after Stacey Jones.