[6] At the time, Ottl was one of six players (along with Philipp Lahm, Christian Lell, Stephan Fürstner, Sandro Wagner) of the Bayern Munich junior team to feature in the Bundesliga squad.

He signed professional forms on 1 July 2005, his first full-time contract, thus following in the footsteps of Bastian Schweinsteiger, Owen Hargreaves and others.

On 13 August 2005, Ottl made his debut for Bayern Munich, coming on as a substitute for Hasan Salihamidžić in a 5–2 win over Bayer Leverkusen.

[10] He made his Champions League debut in a 2–0 win over Inter Milan where he received a booking and played 90 minutes.

[14] Ottl soon found himself lower in the pecking order and once again spent time on the bench after the arrival of Mark van Bommel and Franck Ribéry.

This led Ottl to consider leaving the club in order to secure first-team football if he failed to be given enough games in the coming months.

[15] However, Ottl did not leave the club that season winning another league title and the DFB-Pokal with Bayern.

The club avoided relegation[3] when they won the Bundesliga play-offs against FC Augsburg.

FC Nürnberg, Ottl returned and vowed to fight for a place in the side as he tried to break into the first team.

On 20 November 2011, Ottl made his 100th appearance for Bayern Munich in a 1–1 draw against Bayer Leverkusen.

In the round of 16 of the DFB-Pokal on 22 December 2010, Ottl scored his first goal in over two years in 6–3 thriller win over Stuttgart.

[25] Ottl scored on his Hertha BSC debut in the 4–0 win over ZFC Meuselwitz on 31 July 2011 in the DFB-Pokal.

[31] The limited number of appearances was partially due to an injury he picked up against Bayern Munich.

[36] Ottl stated he wanted to play for a team outside of Germany,[36] because the Bundesliga "no longer interests him.