Team(s)/Athlete(s) of Interest: Ryan Bailey

Time: 2:45 p.m.

Why You Should Watch: Ryan Bailey has been a surprise in this event, coming into the semis with the fastest qualifying time. Not as well known as his American teammates Justin Gatlin, and Tyson Gay, Bailey has now catapulted himself to front of the 100m, and is in prime position to dethrone current champ Usain Bolt.