Mon 06 Jun 2007Vaughan steps down Cricket: Michael Vaughan has ended speculation about his future by stepping down as captain of England's one-day team but has refused to retire completely from the limited overs format of the game.Vaughan's suitability to lead the one-day side building towards the 2011 World Cup in Asia has come under increasing scrutiny after failing to score a century in 86 one-day international appearances.