Japan's Daiya Seto, the reigning world champion in the men's 200- and 400-meter individual medley, resigned as captain of Japan's Olympic swim team on Wednesday in the wake of his admitting to an extramarital affair.Seto's management company released an apology from the married swimmer last Thursday, a day after a weekly magazine published a story about him being at a love hotel with another woman.On Wednesday, he visited the Japan Swimming Federation and submitted his resignation as captain for next year's Olympics, to be held in Tokyo after a one-year postponement on account of the novel …READ FULL ARTICLE