 Otten made his debut in round 12 against eventual premiers , and played one more game for the 2008 season.The next season, he exploded onto the AFL scene, playing a consistent role as Adelaide's third tall in defence and being likened to former defender Nathan Bassett.Otten won an AFL Rising Star nomination in round 9 for his performance against , in which he collected 23 possessions and kicked a goal, and at the end of the season was voted the runner-up in the ward to Daniel Rich.