Richardson, the 100-meter silver medalist, overcame runners from Great Britain and Germany to help the U.S. finish in 41.78 seconds, good for a .07-second win over Great Britain, which struggled with two baton changes in the rain.

Gabby Thomas ran the third leg and got her second gold of the Games, this one going with the 200-meter title. Twanisha Terry and 100 bronze medalist Melissa Jefferson rounded out the team. The exchange between Terry and Thomas that nearly wrecked the Americans in qualifying was better this time.

Still, when Thomas handed off to Richardson, the U.S. was in third.

Richardson had to reel in Daryll Neita (Great Britain) and Rebekka Haase (Germany), and when she did, she flashed a look to her right -- and backward -- that said Ã¢³You're not catching me."

She sprinted eight more steps down the track, and, on her ninth, lifted her left leg high and stomped it on the other side of the finish line, then let out a scream.

It marked a sweet close to the Olympics for Richardson, who came into the Olympics as a favorite but surprisingly fell to Julien Alfred of St. Lucia.

READ MORE: Akani Simbine anchors SA team to silver medal in 4x100m relay final

Fall of Wickets	Player	Score	Overs	Bowler	Out
2	Francesca Bulpitt	93	11.2	Haiyen Nguyen	Clean Bowled
1	Molly Robinson	37	4.6	Mari Kojo	LBW

Finished Nordic Women T20I Cup