Arsenal's Premier League frustrations continued as a determined West Ham held out for a goalless draw at Emirates Stadium.

Abou Diaby saw an early header deflected onto the crossbar, and Emmanuel Adebayor missed two good chances in the second half, while even the introduction of leading scorer Robin van Persie from the bench could not conjure up a winner.

The Hammers, who continued their unbeaten run, defended well as a unit throughout and were worth a share of the points.

The Gunners, meanwhile, may have not lost in the Premier League since beating Chelsea at Stamford Bridge on November 30, but remain well adrift in the title race and, crucially, outside the top four.