Sochi Olympics sport-by-sport guide

A fourth luge event, the mixed relay, will make its Olympic debut in Sochi. The relay will comprise three consecutive slides: two singles (one woman

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A fourth luge event, the mixed relay, will make its Olympic debut in Sochi. The relay will comprise three consecutive slides: two singles (one woman followed by one man) and a doubles race. While Germany's track record gives it the odds of taking the relay, the brand new event has no history of Olympic winners and losers, which makes it anyone's game -- and likely, a fan favorite at the 2014 Games. -- Anastassia Smorodinskaya