Running in Lane 7 and leading down the stretch, Miller apparently could sense that Felix was closing fast on the inside. With four strides remaining, Miller then dived towards the finish line.
The maneuver actually may have slightly slowed Miller, 22, as she began to put less force into the ground to propel herself forward. Still, Miller’s torso crossed first, as required by the rules, and she took the gold medal in 49.44 seconds, her personal best.
Miller’s dive was clearly a move of desperation. And it’s completely legal.