Enter the competition to win amazing prizes between 22nd Feb -- 22nd Mar at www.sportrelief.com/backsides Follow all the action at www.bbc.co.uk/backsides and on radio 5live. Alan and Robbie walk out on to the famous Wembley turf to 90,000 empty seats. Between them they'll be sitting on every single one before the end of this week. Find out more about Sport Relief: bit.ly/1cqcGHG Alan Shearer and Robbie Savage race to be the first to sit on 45,000 seats at Wembley Stadium. If you donate £5 to the cause you can enter a competition to win prizes including tickets to the World Cup and One Direction concert tickets. Enter the competition here: www.bbc.co.uk/backsides