TSG 1899 Hoffenheim On 27 August 2007, Obasi moved to 2. Bundesliga side Hoffenheim for an undisclosed fee. Obasi quickly made an impact for Hoffenheim when he scored twice on his debut despite losing 3–2 against Freiburg. After missing the next game, Obasi returned to the first team, where he set up one of the goals, in a 2–0 win over Paderborn. After returning, Obasi continued to appear in the first team and scored five times in five months. In a match against Paderborn on 9 March 2008, which saw Hoffenheim win 1–0, Obasi was sent-off in the 54th minute when he was involved in an incident with opposition midfielder Erwin Koen. After the match, Obasi claimed that Koen racially abused him, which led to his sending off, a claim Koen denied and even thought about taking legal action against Obasi. In the end, the DFB's control committee decided against taking action against Koen, citing lack of evidence and Obasi served a three match suspension. Following his return from suspension, Obasi scored four more goals later in the season and helped the club reach promotion to Bundesliga for the first time. Obasi finished his first season at the club, making thirty appearances and scoring twelve times in all competitions. This made him the club's joint top-scorer in the league, along with Demba Ba. Ahead of the 2008–09 season, Obasi was linked with a move to England, but eventually stayed at the club throughout the summer. However, at the start of the season, Obasi missed out several matches, due to injury and international commitment. Obasi made his first appearance of the season on 13 September 2008 against Stuttgart, where he played 30 minutes, in a 0–0 draw. Despite suffering from injury in training soon after, Obasi then scored his first goal of the season in a 5–2 win over Hannover 96 on 18 October 2008, followed up by scoring twice, in a 3–0 win over Hamburg in the next game. Throughout the 2008–09 season, Obasi suffered a setback when he was plagued by injuries. Nevertheless, Obasi finished the season, making twenty–six appearances and scoring six times in all competitions. In the 2009–10 season, Obasi started well when he scored his first goal of the season, in a 2–0 win over Oberneuland in the first round of DFB-Pokal, followed up by scoring in a 1–1 draw against Bayern Munich in the opening