Manchester United boss Sir Alex Ferguson is stunned at being 15 points clear in the Premier League title race. United require only 13 more points from their remaining nine games to clinch a record 20th championship.

"With Manchester City coming on the scene in the last couple of years and Chelsea and Arsenal and Tottenham, you have teams vying for that top-four position," Ferguson told Sirius XM.

"I expected it to be really tight.

"The first point was that after last season, we wanted to make sure we didn't lose it on goal difference, and that has improved markedly.

"But I never thought we would be 15 points clear at this stage of the season."