Poland Athletics Indoor Worlds(01 of08)
Open Image ModalJapan\'s Yoshihide Kiryu runs in his 60m heat during the Athletics World Indoor Championships in Sopot, Poland, Friday, March 7, 2014. (AP Photo/Petr David Josek) (credit:ASSOCIATED PRESS)
Poland Athletics Indoor Worlds(02 of08)
Open Image ModalJapan\'s Yoshihide Kiryu and United States\' Trell Kimmons, from left, cross the line of a men\'s 60m heat during the Athletics Indoor World Championships in Sopot, Poland, Friday, March 7, 2014. (AP Photo/Alik Keplicz) (credit:ASSOCIATED PRESS)
Poland Athletics Indoor Worlds(03 of08)
Open Image ModalBritain\'s Richard Kilty, left, runs next to Japan\'s Yoshihide Kiryu in their 60m semi-final during the Athletics World Indoor Championships in Sopot, Poland, Saturday, March 8, 2014. (AP Photo/Petr David Josek) (credit:ASSOCIATED PRESS)
IAAF World Junior Championships - Day 3(04 of08)
Open Image ModalEUGENE, OR - JULY 24: Kendal Williams of the U.S. (C) poses on the podium with Trayvon Bromell of the U.S. and Yoshihide Kiryu of Japan after winning the 100m final during day three of the IAAF World Junior Championships at Hayward Field on July 24, 2014 in Eugene, Oregon. (Photo by Jonathan Ferrey/Getty Images) (credit:Jonathan Ferrey via Getty Images)
IAAF World Junior Championships - Day 2(05 of08)
Open Image ModalEUGENE, OR - JULY 23: Yoshihide Kiryu of Japan poses for photographers after finishing third in the 100m Final during day two of the IAAF World Junior Championships at Hayward Field on July 23, 2014 in Eugene, Oregon. (Photo by Jonathan Ferrey/Getty Images) (credit:Jonathan Ferrey via Getty Images)
IAAF World Junior Championships - Day 2(06 of08)
Open Image ModalEUGENE, OR - JULY 23: Yoshihide Kiryu of Japan pose for photographers after finishing third in the 100m Final during day two of the IAAF World Junior Championships at Hayward Field on July 23, 2014 in Eugene, Oregon. (Photo by Jonathan Ferrey/Getty Images) (credit:Jonathan Ferrey via Getty Images)
IAAF World Junior Championships - Day 1(07 of08)
Open Image ModalEUGENE, OR - JULY 22: Yoshihide Kiryu of Japan prepares to compete in the100m preliminaries during day one of the IAAF World Junior Championships at Hayward Field on July 22, 2014 in Eugene, Oregon. (Photo by Jonathan Ferrey/Getty Images) (credit:Jonathan Ferrey via Getty Images)
IAAF World Junior Championships - Day 1(08 of08)
Open Image ModalEUGENE, OR - JULY 22: Yoshihide Kiryu of Japan greets a fellow competitor after winning a men\'s 100 meters preliminary heat during day one of the IAAF World Junior Championships at Hayward Field on July 22, 2014 in Eugene, Oregon. (Photo by Steve Dykes/Getty Images) (credit:Steve Dykes via Getty Images)