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|2012 London||400 m medley|
Career[change | change source]
References[change | change source]
- SportsReference.com (SR/Olympics), Kosuke Hagino; retrieved 2012-7-28.
- "2012 London Olympics: Kosuke Hagino With Asian Record to Lead 400 IM; Phelps Underperforms," Swimming World (US). July 28, 2012; retrieved 2012-7-28.