Though he feels that his side have essentially secured their Premier League safety, the Eagles boss wants them to maintain their form and provide real competitionDespite all but ensuring their Premier League safety on Wednesday, Crystal Palace manager Tony Pulis wants his side to maintain their fine run of form at West Ham.
Following the Eagles' surprise 3-2 win at Everton, the Welshman declared his belief that their 10-point cushion over the bottom three with just four games remaining means that their top-flight survival is secure.
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"We have a responsibility to the Premier League to turn up for the next four games," the former Stoke City boss told Sky Sports.
"I have got great respect for Sam [Allardyce] and West Ham United and then we have got what could be big games against [Manchester] City and Liverpool [still to come].
"I have said to [the players] that it is a fantastic achievement but we have a responsibility to perform in the next four games."
The victory at Goodison Park was Palace's fourth league win in succession, lifting them to 11th place and above Saturday's opponents in the standings.
West Ham, like the Eagles, have climbed away from peril since the turn of the year, with four wins on the bounce in February moving them into mid-table.
They have fared less well since then, however, with a run of two victories and five defeats in their last seven matches leaving them in 12th place, seven points above the drop-zone.
West Ham's home form has been strong over the last two months, winning four out of six games, and manager Allardyce will be keen to improve on that record on Saturday and secure three points that should calm any lingering relegation fears.
They, too, were in action in midweek, going down 3-1 at Arsenal despite taking the lead through Matt Jarvis, and the Upton Park faithful know that a return to winning ways on Saturday would see them climb above their opponents and further aid their bid for a top-half finish.
Captain Kevin Nolan missed the trip to the Emirates Stadium with a hamstring problem and is a doubt for Saturday, as are James Collins (calf) and Joey O'Brien (shoulder).
Palace's only doubt is Kagisho Dikgacoi, who missed the game on Wednesday with a knock.