World champion Coleman and Salwa Eid Naser could miss the Tokyo Games for what are known in the anti-doping world as whereabouts failures. Since early 2001, when the U.S. Anti-Doping Agency's whereabouts system began, there have been 21 whereabouts sanctions out of 175,000 completed tests. Coleman's latest case brought a flurry of Monday morning quarterbacking from the track world, much of it on social media. Set a recurring daily alarm 15 minutes before your hour window. It shows theyre doing their job.The whereabouts system came under a uniform global protocol in 2009.

Salwa Eid Naser was already being investigated for missing doping tests when she raced to an upset win in the 400 meters at the world track and field championships. The Athletics Integrity Unit confirmed Sunday that Naser was already under scrutiny for three whereabouts failures prior to her world championship win in Doha in October. That means that Naser could be stripped of her gold medal if she's found guilty. The Nigeria-born sprinter, who represents Bahrain, surged past Olympic champion Shaunae Miller-Uibo to win in 48.14 seconds, the fastest time since 1985. Three violations within 12 months can lead to a suspension if the athletes cant justify why they werent available for testing.