Antoine's medal is the first skeleton medal for the U.S. since Jimmy Shea's gold in 2002. His bronze gave the U.S. 14 medals in the Sochi Games.
Team USA also saw victory in ice hockey on Saturday. T.J. Oshie scored four times in the shootout and got the winner in the eighth round, leading the United States past Russia 3-2 Saturday in the thrilling revival of a classic Olympic hockey rivalry.
Cam Fowler and Joe Pavelski also scored for the Americans in the marquee game of the preliminary round. Jonathan Quick made 29 saves and stopped five attempts in the shootout.
Oshie, one of the NHL's shootout specialists, went 4 for 6 against Sergei Bobrovsky, ending the game with one last slow-developing move past the Columbus goalie. The Americans improved to 2-0 in preliminary-round play, all but wrapping up an automatic berth in the quarterfinals next week.
Although the game had little impact on the medal race in Sochi, the finish woke up the echoes of a U.S.-Russia rivalry best known for the "Miracle on Ice" at Lake Placid in 1980, when a team of American college students stunned the Soviet Olympic team.
In addition to the loss on the rink, Russia also suffered a blow on the slopes. Officials say Russian skicross racer Maria Komissarova broke and dislocated her spine Saturday during a practice run.
Russian freestyle ski federation spokesman Mikhail Verzeba said Komissarova fractured the 12th dorsal vertebrae in her lower-middle back and was taken to a hospital near the Rosa Khutor Extreme Park for emergency surgery.
Verzeba said the 6 1/2-hour operation was successful.
The 23-year-old was practicing for next Friday's contest on a sunny morning on the 1,200-meter course, which has nine banked turns and 25 jumps.
In the main competition, six skiers race against each other, with the top three advancing through heats until the final.
A spokeswoman for the International Ski Federation said the accident occurred on a series of jumps near the top of the course and that Komissarova fell while exiting the third jump.
Komissarova is ranked 33rd in the current World Cup standings and recovered from a leg injury last year to qualify for the Olympics. Her best World Cup finish was a second-place at a race in Switzerland in 2012.
A look at Saturday's events:
ALPINE SKKING: In women's Super-G, Austria's Anna Fenninger took gold, Germany's Maria Hoefl-Riesch took silver and Austria's Nicole Hosp took bronze.
CROSS-COUNTRY: In ladies' relay 4x5 km, Sweden took gold, Finland took bronze and Germany took bronze.
ICE HOCKEY: (Men) USA 3 - Russia 2; (Men) Slovakia 1 - Slovenia 3; (Women) Finland 2 - Sweden 4; (Women) Switzerland 2 - Russia 0.
SHORT TRACK: In ladies' 1500 m finals, China's Yang Zhou took gold, Korea's Suk Hee Shim took silver and Italy's Arianna Fontana took bronze. In men's 1000 m finals, Russia's Victor An and Vladimir Grigorev took gold and silver, respectively, and the Netherlands' Sjinkie Knegt took bronze.
SPEED SKATING: In men's 1500 m, Poland's Zbigniew Brodka took gold, the Netherlands' Koen Verweij took silver and Canada's Denny Morrison took bronze.
SKELETON: In men's skeleton finals, Russia's Alexander Tretiakov took gold, Latvia's Martins Dukurs took silver and United States' Matthew Antoine took bronze.
CURLING: (Women) Canada 8 - Japan 6; (Women) China 7 - Sweden (6); (Women) Great Britain 10 - Korea 8; (Men) Sweden 8 - Germany 4; (Men) Canada 7 - Great Britain 5; (Men) Denmark 3 - Switzerland 9; (Men) Russia 6 - China 9; (Women) USA 6 - Sweden 7; (Women) Great Britain 6 - Switzerland 8; (Women) Denmark 9 - China 6.
SKI JUMPING: TBA
The Associated Press contributed to this report.