Just the four remain in the 2013 World Grand Prix, following a Friday evening that held a few surprises.

Michael van Gerwen is out, having been ousted by Dave Chisnall, and that leaves Phil Taylor on his own at the head of the market.

Former Sky Sports commentator John Gwynne joins Alex Dunn to look ahead to the two semi final matches, as Taylor takes on James Wade and Chisnall comes up against Justin Pipe.

Enjoy.

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