Tokyo Olympic silver medal-winning race walker Koki Ikeda has been provisionally suspended for "use of a prohibited substance/method," track and field's doping watchdog said Friday.Ikeda, 26, achieved the best-ever Olympic result by a Japanese race walker when he finished second in the men's 20-kilometer event at the Tokyo Games in 2021.The Shizuoka Prefecture native was runner-up again at the 2022 world championships and placed seventh at the Paris Olympics this past summer.The Associated Press reported Ikeda received the provisional ban for "suspected blood doping," quoting the Monaco-bas…READ FULL ARTICLE