Smith powers past Luke Humphries to reach semis at William Hill World Darts Championship and says even if he plays his mum or son next, he has to win <br /><br />Tungsten Tales is in association with Winmau Darts <br /><br />Subscribe for more darts videos:<br />https://www.youtube.com/TungstenTales<br /><br />Facebook: https://www.facebook.com/TungestenTales/<br /><br />Twitter: @TungstenTales<br /><br />#Darts #WHDarts
