Steve Mounie produced the winner as Huddersfield Town defeated relegation rivals West Brom.
Raj van La Parra had fired the visitors into a 48th-minute lead, but it was Mounie who put them in the driving seat eight minutes later when he ran on to Alex Pritchard's pass to make it 2-0.
Craig Dawson pulled one back for the visitors to spark a late onslaught, but the Terriers held on to claim three vital points.
Terriers boss David Wagner was delighted to win the "belter" afterwards: “I am delighted, the dressing room is over the moon; they absolutely deserved every single smile on their faces and the supporters faces as well.
“We spoke a lot about the importance of this game, to keep the momentum to show everything we have to show in a like Hughesy (Andrew Hughes) says a 'belter' and it was one.
“In this 'belter' you have to fight, they have done it, you have to suffer, they have done it, you have to accept pain, they accepted and then in some situations they played some decent football as well, even if we have to say it was for sure not one of the nicest football matches we have seen.
“But in these situations it only count to win, fight and do everything to get a result over the line so I am absolutely delighted."