EUGENE, OR - MAY 29: Joe Kovacs of the United States in action during the shot put during Day 1 of the IAAF Diamond League Prefontaine Classic at Hayward Field on May 29, 2015 in Eugene, Oregon. (Photo by Jonathan Ferrey/Getty Images)
EUGENE, OR - MAY 29: Joe Kovacs of the United States in action during the shot put during Day 1 of the IAAF Diamond League Prefontaine Classic at Hayward Field on May 29, 2015 in Eugene, Oregon. (Photo by Jonathan Ferrey/Getty Images)