Roddick prepared to lead players' union

Andy Roddick has called for players on the ATP Tour to unite in a bid to avoid the farcical scenes which have marred this year’s US Open.

The American was speaking after easing into the quarter-finals in New York with a four-set win over David Ferrer in a match which had to be moved to court 13 after the Louis Armstrong Court was deemed unplayable by the players.