Four-time defending Olympic wrestling champion Kaori Icho's bid for a fifth title took a severe hit on Saturday, when the 35-year-old failed to qualify for September's world championships.Icho lost her 57-kilogram qualification playoff against Rio de Janeiro Olympic 63-kg champ Risako Kawai, who will represent Japan at the worlds in Kazakhstan. The worlds are the main qualifying event for next year's Tokyo Olympics."Frankly, this is frustrating," she said. "But I did everything I could up to this point and came prepared, so I don't have any regrets."Reaching the podium at the worlds will sa…READ FULL ARTICLE