Liam Marshall the star as Wigan Warriors turn the tables on St Helens

You would have had to go a long way to witness a more exciting Challenge Cup semi-final than this one on Saturday. Never has a game illustrated so well the old cliché about a game of two halves. St Helens came into the game as the hot favourites but, as I suggested last week, Wigan looked remarkably good value for the odds that were being qu