Jamaica rolls to men's 4x100m relay semifinal win, takes aim at gold | Tokyo Olympics | NBC Sports 'A total embarrassment': Carl Lewis slams U.S. track leadership after 4x100 relay failure Yahoo SportsU.S. men fail to advance to 4x100 relay final in track and field at Tokyo Olympics ESPNCarl Lewis: US men's 4x100m relay fail is a 'total embarrassment,' says US sprint great CNNThe Relay Curse Continues for the U.S.