when scoring twice against FK Pirmasens for an 11–1 win in the DFB-Pokal. On matchday 2 of the Bundesliga, Derdiyok scored in the league-match against Borussia Mönchengladbach. Derdiyok scored six goals in 32 Bundesliga matches. In his third and final season, Derdiyok scored his first goal of 2011–12 season in a DFB-Pokal against Dynamo Dresden but only to lose 4–3 after extra time. On 1 October 2011, Derdiyok scored in a 3–1 win over VfL Wolfsburg when he stretched to take down a long pass at the edge of the box, flipped the ball back over his head with two defenders around him and buried it in the back of the net with an overhead kick. On 23 November 2011, he scored a headed equalizing goal against Chelsea in the group stage of the Champions League. Bayer Leverkusen went on to win this match 2–1 as Manuel Friedrich scored the winning goal. Bayer Leverkusen qualified for the last 16 of this competition. Three days later, playing away in a draw 3–3 with the Hertha BSC in the Bundesliga, Derdiyok scored his first hat-trick with Leverkusen. Later this season Derdiyok ended up in the hospital, needing seven stitches for a cut that he suffered in a freak injury when he knocked over the glass in which he keeps his toothbrush and then overlooked a shard of glass and cut his foot open on it. His injury made him miss three weeks; he returned from injury when he was on the bench in a match against 1. FC Köln but he wasn't fit enough to play. Derdiyok made his return in a match against FC Bayern Munich where Derdiyok provided an assist for Stefan Kießling. The 2–0 win ended a spate of 14 matches of Bayer Leverkusen without a win against Bayern Munich. In the 2011–12 Bundesliga, Derdiyok scored seven goals. Hoffenheim In April 2012, TSG 1899 Hoffenheim have confirmed their interests signing Derdiyok. On 2 May 2012, Derdiyok signed a contract for TSG 1899 Hoffenheim for the 2012–13 season until June 2016. He transferred for an unknown price tag. Hoffenheim had been looking for a new striker since the winter transfer window when the then injured Vedad Ibišević joined VfB Stuttgart in the winter transfer window. On 21 July 2012, Derdiyok scored on his debut for Hoffenheim, a 2–0 win against SV Waldhof Mannheim. He made his league debut in the