Bobsleigh - Winter Olympics Day 15

Stunning Moments From Day 15 of the Winter Olympics

Ester5Cameron Spencer/Getty Images (L); Alexander Hassenstein/Getty Images (R)Double DutyA week after winning the alpine skiing super-g, the Czech Republic's Ester Ledecka took first place in parallel giant slalom snowboarding to become the first woman in Winter Olympic history to win gold in two separate sports at the same Games.

Silver Surfer Al Bello/Getty Images Silver Surfer Kyle Mack drilled a front 1440 Bloody Dracula (yes, that's the name) en route to 2nd place in the Olympic debut of men's big air snowboarding. Getting Crowded, and Fast Ronald Martinez/Getty Images Getting Crowded, and Fast For the first time in nearly a century, mass-start speed skating made its return to the Olympic stage. Air Canada Al Bello/Getty Images Air Canada Sebastien Toutant took gold in the first-ever men's Olympic big air competition. Red Run, Red Run Alexander Hassenstein/Getty Images Red Run, Red Run Switzerland would get the gold, but Germany's Lena Duerr dropped the hammer down the slalom course at Yongpyong Alpine Center in the inaugural Olympic alpine team event. Well, It was an American Curl Dean Mouhtaropoulos/Getty Images Well, It was an American Curl Team USA defeated Sweden 10-7 to earn its first-ever men's curling gold medal. Korean Bob-ecue Lars Baron/Getty Images Korean Bob-ecue Days after winning men's skeleton to claim its first-ever Olympic sliding medal, South Korea is in prime position to repeat the feat in 4-man bobsled. The hosts sit in second place with two runs remaining.

Speed Skating - Winter Olympics Day 15Jamie Squire/Getty ImagesMass-ters of the HouseSeung-Hoon Lee skates to mass-start speed skating gold for South Korea inside a raucous Gangneung Oval.