Vancouver silver medallists Davis and White led all the way to seal the title by 4.53 points ahead of reigning champions Tessa Virtue and Scott Moir of Canada. Russia’s Elena Ilinykh and Nikita Katsalapov won bronze.
The Americans, who train with the Canadian dancers in Detroit under Russian-born coach Marina Zoueva, completed their medal set after their silver in Vancouver and team bronze in Sochi.
They scored 116.63 points for their free skate to Scheherazade – over two points higher than the previous record they achieved in the team event just over a week ago.
After already setting a new record in the short dance on Sunday they scored an overall total record of 195.52, beating their previous best from the Grand Prix final by over four points.
The two-man bobsleigh was won by the Russian pair of Alexey Voevoda and Alexander Zubkov, the host country’s first ever gold in the event. Silver went to Alex Baumann and Beat Hefti of Switzerland and bronze went to Steven Holcomb and Steven Langton of the United States.
Jamaica’s Olympic bobsleigh adventure, funded by an internet appeal and backed by an international outpouring of goodwill, ended with a whimper when 46-year-old pilot Winston Watts and brakeman Marvin Dixon came in second-last in the two-man event.
Jamaica were hoping to represent their country with the same vigour and enthusiasm shown by their 1988 Calgary counterparts, who inspired the movie, Cool Runnings.
But Watts and Dixon were unable to produce the miracle they needed in the third run to make up their time deficit from the first two heats – finishing 29th out of 30 runners.
“I promised to slide today faster than yesterday,” Watts said after the third run. “And we did so. Unfortunately it was not enough to go further.
“Hopefully, we sent a message to the smaller countries, you don’t need snow to do bobsleigh. You don’t need snow to do winter sports.”
In women’s biathlon, Darya Domracheva took her third gold of the Olympics by winning the women’s 12.5km mass start to become Belarus’s greatest winter Olympian.
She finished 20.2sec ahead of Gabriela Soukalova of the Cezch Republic with bronze going to Tiril Eckhoff of Norway.
Anton Kushnir completed a Belarus double in the freestyle aerials by winning men’s gold.
Following Alla Tsuper’s victory in the women’s competition, he also succeeded compatriot Alexei Grishin after the defending champion was knocked out in the heats.
Australian David Morris was a shock silver medallist while Jia Zongyang took bronze for China.
Germany’s team of Severin Freund, Marinus Kraus, Andreas Wank and Andreas Welinger ended Austria’s dominance in the ski jumping team event, taking gold in a down-to-the-wire Olympic competition.
The four-man German team collected 1041.1 points over two rounds and eight jumps, ahead of defending Olympic champions Austria and a delighted Japanese team, led by veteran Noriaki Kasai.