After the 2002 season, Takahara moved to Hamburger SV. He made his Bundesliga debut on in January 2003 in a 2–2 draw against Hannover 96, thereby becoming the third Japanese footballer to play in Bundesliga after Yasuhiko Okudera and Kazuo Ozaki. On 3 December 2006, he scored his first hat-trick in the Bundesliga in a match against Alemannia Aachen.
