Despite the size of the two clubs, head-to-head battles between Manchester United and Liverpool have been a rare occurrence since the establishment of the Premier League in 1992.
However, the two North-West giants finished first and second during the 2008-09 campaign, with United eventually ending the season with a four-point advantage over their fierce rivals.
While Liverpool suffered just two defeats and scored nine more goals, registering 11 draws allowed United to win a record-equalling 18th league title.
On the 11th anniversary of that success, Sports Mole challenges you to name the players which helped United and Sir Alex Ferguson to add another piece of silverware to their respective collections.