Arsenal had striker Emmanuel Adebayor sent off in the second half, which hampered their hopes of finding a winner after Keane's goal had cancelled out Robin van Persie's strike.

Arsene Wenger's men went into the match eight points off the pace, and perhaps more significantly they were - and remain - out of the top four following Aston Villa's win at West Ham.

Despite taking the lead through a fine strike from Van Persie after 24 minutes, it proved a false dawn as the Reds levelled before the break when Keane latched onto a long ball up-field and lashed in a thunderous shot.

Roman Bednar's injury-time header earned bottom side West Brom their first win in 11 games and increased the pressure on Manchester City boss Mark Hughes.

Albion fans chanted "You're getting sacked in the morning" in the direction of Hughes, whose side remain in the relegation zone.

Luke Moore's first goal for the Baggies had given them the lead before City levelled six minutes from time, Scott Carson credited with an own goal after substitute Felipe Caicedo's backheel had struck a defender, the post and the goalkeeper before crossing the line.

But Bednar had the final say by heading home a right-wing centre from Gianni Zuiverloon to cause wild scenes of celebration.

Damien Duff came off the bench to fire Newcastle to a sixth successive Barclays Premier League win over Tottenham in yet another dramatic finish at St James' Park.

The Republic of Ireland midfielder snatched victory in the 90th minute after combining brilliantly with fellow substitute Mark Viduka just as it looked as if his side would have to settle for a third successive home draw.

Luka Modric, a Newcastle target before he opted to move to White Hart Lane, looked to have denied the Magpies with a 28th-minute equaliser with the home side appealing in vain for an offside flag.

That cancelled out Charles N'Zogbia's 11th-minute opener after he had run on to Shay Given's towering clearance and got the better of covering defender Benoit Assou-Ekotto to score.