Watch: U.S. women win 4x100m relay, men's medal-less streak continues

The 4x100m relays are one of the most-watched Olympic track and field events, but Team USA was left with mixed feelings after Friday's results.

The American women made an epic comeback in their race to win gold, led by 100m silver medalist Sha'Carri Richardson on the final leg of the relay.

The U.S. won gold in the women's event for the first time since the 2016 Rio Games.

The American men had less luck in their race.

On the first baton exchange, Christian Coleman struggled to hand off to Kenny Bednarek, who appeared to take off too early and overran the legal hand-off zone.

The poor exchange resulted in the relay being disqualified and the U.S. continuing a medal-less streak that stretches back to the 2008 Beijing Games.

Canada won its first gold in the event since 1996; South Africa claimed silver — its first Olympic medal ever — and Great Britain earned bronze.

Every time the U.S. men have run in this event since 2004, the last time it medaled, there has been some mishap involving the baton hand-off at some point. However, at the 2012 London Games, they were stripped of their silver medals for Tyson Gay's doping violation.

This is the second in-race disqualification for the relay in that span. It was eliminated in the prelims at the Tokyo Games.