LONDON, Jan 25 - Winning a Premier League title is never going to be a stroll in the park and Arsenal got a painful reminder of that on Sunday with a 3-2 home defeat by Manchester United increasing the jitters for the north London club.

At times this season Mikel Arteta's side have looked like disappearing into the distance at the top of the table with reigning champions Liverpool struggling and Manchester City still not the relentless force they once were.