USA's Shani Davis frustrated by lack of medal

United States speed skater Shani Davis has revealed that he was frustrated over his eighth-place finish in the 1,000m speed skating event in the Winter Olympics.

The 31-year-old was looking to win his third gold medal in a row in the event following his success in Turin and Vancouver, but he finished well outside the medals in Sochi.

He told reporters: "I don't know what's going on. I was skating hard, so hard. I was ready for it, man, like I was ready for this. I got my ass kicked."

Davis has won four Olympic medals during his career.