West Ham have shown "strength, character and discipline" to pull away from the Premier League drop zone, says former defender Matthew Upson.
They battled back from a two-goal deficit to draw 2-2 with league leaders Arsenal on Sunday.
David Moyes' men now sit four points clear of the relegation zone with a game in hand.
The Hammers have lost just one of their past five league games, reviving their hopes of staying up.
Victories over Southampton and Fulham in recent weeks have helped West Ham to climb further away from the drop zone.