Allyson Felix

Allyson Felix fastest in 400m semifinals

Allyson Felix clocked 49.67 seconds, the fastest time in Sunday’s 400m semifinals, to win heat three and advance to Monday’s final. Felix, t…

Usain Bolt and Justin Gatlin

What to watch in primetime on NBC: Day 9

Michael Phelps tries to win a sixth Rio medal in primetime Friday night on NBC at 8 p.m. ET/PT, plus track and field action heats up. ET/CT …