The win moved Wolves back above Tottenham with a one-point advantage ahead of the final day of the league season on Sunday. Wolves must face Chelsea; Tottenham gets Palace, which has lost its last seven games.
Daniel Podence, a winter signing from Olympiakos, scored his first Premier League goal in the 41st minute with a header into an unguarded net off a cross from Matt Doherty, who was in turn cued up by a smart lob from Joao Moutinho. Jonathan Castro showed off his footwork to score the second goal on the turn in the 68th.
“We wanted to be in Europe again and now we probably need to win at Chelsea to make sure we are again,” Doherty told broadcaster BT Sport. “I thought we probably started off a bit slow, bit flat in the first half, struggled to get going, but once we scored we got a bit more confident."
Palace showed little sign of breaking its losing run, the club's worst under manager Roy Hodgson. Jeff Schlupp sent a low shot narrowly wide in the first half on his first Premier League start of 2020 following injury problems. Palace lost defender Mamadou Sakho to a leg injury after 23 minutes.
Wolves' European push was helped earlier in the evening when eighth-placed Sheffield United was beaten by Everton 1-0. That result, combined with the win for Wolves, meant Sheffield is no longer in with a chance of reaching the Europa League.
Wolves is still in this season's Europa League, which was postponed because of the coronavirus pandemic. It faces Podence's old club, Olympiakos, in the second leg of their last-16 fixture on Aug. 6. The first leg went 1-1.
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