US Open 2015: Roberta Vinci on beating Serena Williams

Roberta Vinci describes her shock victory over Serena Williams in the semi-finals of the US Open as a "magic moment".

Williams was two wins from completing the calendar Grand Slam but lost 2-6 6-4 6-4 to the unseeded Italian.

Vinci will face fellow Italian and Fed Cup team-mate Flavia Pennetta in the final.