Starting with the following 16 moments, which represent eight Olympic sports, fans will have three days to vote on each pairing until the challenge's most popular moment is revealed. The top-eight moments will be announced March 31, top-four on April 2, top-two on April 5 and the winning moment on April 8.
Basketball: The "Dream Team" (Barcelona, 1992) - vs. - The "Redeem Team" (Beijing, 2008)
Gymnastics: The "Magnificent Seven" (Atlanta, 1996) - vs. - The "Fierce Five" (London, 2012)
Swimming: Jason Lezak (Beijing, 2008) - vs. - Michael Phelps (Beijing, 2008)
Track & Field: Jesse Owens (Berlin, 1936) - vs. - Joan Benoit Samuelson (Los Angeles, 1984)
Figure Skating: Brian Boitano (Calgary, 1988) - vs. - Sarah Hughes (Salt Lake City, 2002)
Ice Hockey: "Miracle on Ice" (Moscow, 1980) - vs. - U.S. Women's Ice Hockey Team (Nagano, 1998)
Speedskating: Eric Heiden (Lake Placid, 1980) - vs. - Dan Jansen (Lillehammer, 1994)
Alpine Skiing: Lindsey Vonn (Vancouver, 2010) - vs. - Bode Miller (Vancouver, 2010)
The launch of the Team USA Bracket Challenge follows a series of U.S. Olympic Team Facebook apps that help bring fans closer to the Olympic Movement by continuing the Olympic conversation beyond Games-time. Other Team USA apps have offered Facebook fans exclusive video content via YouTube, the opportunity to video chat live with athletes, a 20-question poll to determine, "What Olympic Sport are You?," and an interactive map where fans can locate Olympic Day activities in their local communities.