Marcell Jacobs vs Fred Kerley | Checking 100m World Record for Cracks

Kip Keino Classic 2022 A little historical background High Altitude WR 9.95 Jim Hines 1968 9.93 Calvin Smith 1983 Low Altitude WR 10.03 Jim Hines 1968 10.03 Silvio Leonard 1977 10.02 James Stanford 1980 10.00 Carl Lewis 1981 9.97 Carl Lewis 1983 9.97 Calvin Smith 1983 9.96 Mel Lattany 1984 9.93 Carl Lewis 1987