Alex Dunn is joined by Sky Sports commentator, Nick Lester, to preview the finals of the 2015 US Open.

Following an incredible semi-final, Serena Williams crashed out at the hands of Roberta Vinci, who set up an all Italian final against compatriot Flavia Pennetta.

Meanwhile on the men's side of things, Novak Djokovic and Roger Federer cruised into the final with comfortable wins against Marin Cilic and Stan Wawrinka.

Nick offers his thoughts on both finals, and puts forward his best bets.

Enjoy.

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