Tennis Podcast: US Open semi-finals preview

Dave Kelner is joined by Sky Sports commentator, Nick Lester, to preview the semi-finals of the 2015 US Open.

Stan Wawrinka and Roger Federer both came through their quarter-final matches unscathed and the all-Swiss battle is eagerly-awaited.

Nick previews all four matches and gives his best bets on the podcast.

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