FILE - In this Oct. 14, 1964, file photo, U.S. Marine Lt. Billy Mills breaks the tape to win the 10,000-meters Olympic race in Tokyo, setting an Olympic record of 28:24:4, and was the only American ever to win the event. Karsten Warholm's staggering run to shatter his own 400-meter hurdles world record at the Olympics on Tuesday, Aug. 3, 2021, has posed the question: Was it the greatest track race ever? Maybe. (AP Photo, File)