Swansea City came from behind to beat West Brom and claim consecutive Championship victories for the first time under Russell Martin.
The visitors, second in the table going into this game, were ahead after just 52 seconds as they stunned the Swansea.com Stadium.
But the Swans came out fighting and goals after the break from Joel Piroe and derby-day hero Jamie Paterson sealed the points.
Paterson, like he had three days earlier against Cardiff, provided the assist for Piroe on the hour mark as the Dutchman struck his eighth goal of the season.
Then the partnership was flipped as Piroe turned provider, setting up Paterson who went on to nutmeg Kyle Bartley and poke home into the corner of the net for his fifth league goal in 13 games.
That proved enough as the Jack Army celebrated another win on home soil.
Russell Martin made one change to his starting XI. From the team that beat Cardiff City last time out, Ben Cabango came into defence in place of Ryan Manning, who sat this one out as the injury which forced his return from international duty was being managed.
That meant Ben Hamer continued in goal after keeping another clean sheet with Ryan Bennett and Kyle Naughton alongside Cabango.
Captain Matt Grimes was partnered by Flynn Downes in midfield while Jake Bidwell, who scored the third goal on Sunday, and Ethan Laird provided the support out wide while Paterson and Korey Smith sat behind Piroe.
The Swans couldn’t have got off to a worse start, with the Baggies in front after 52 seconds.
Paterson lost possession, and the visitors took full advantage as Jake Livermore, Matty Phillips and Callum Robinson linked up to find Grant, who fired home from ten yards.
There was a slight lull in the action, but the Swans – continuing to attempt to play themselves out of danger – almost paid the price again as Paterson’s flicked pass was read by Livermore in the box, but he then blasted high and wide.
The Swans started to settle more as the half progressed, and Korey Smith’s cross from a sublime Matt Grimes through ball was cut out by Darnell Furlong.
Ben Hamer was then called into action to parry a low Phillips effort in what proved the last real action of the half.
Martin sent on Olivier Ntcham at the break, and the Swans certainly had more of an attacking threat.
After Hamer dealt with a Livermore effort after Laird had coughed up possession, the Swans really got hold of the game.
Grimes and Piroe linked to find Paterson, and his crossfield pass fell perfectly for Ntcham, but he mis-hit his volley.
But the goal the hosts were searching for came on the hour. Grimes found Paterson, and his pass from inside his own half dropped for Piroe, who’s control then allowed him to get ahead of Matty Clarke inside the box before slotting home from close range.
The Swans’ tails were up, and they pushed on from there.
Ntcham tried his luck on two occasions, but just failing to find the target. First, he drove low past the post after being teed up by Ethan Laird, before firing high and wide after being set up by the productive Paterson following a quickly-taken free-kick.
Hamer, though, had to be on his toes as a fine reflex save saw him push Matty Phillips’ thunderous effort onto the crossbar.
But the Swans got their noses in front with a fine goal from Paterson. Piroe, this time, turned provider as he intercepted from Furlong and found Paterson, wot nutmegged former Swan Bartley and poked home.
The Swans held on deservedly for another win, moving them onto 17 points from 13 games.
Swansea City: Ben Hamer, Ryan Bennett, Kyle Naughton, Ben Cabango (Rhys Williams, 86), Ethan Laird, Matt Grimes (capt), Flynn Downes (Olivier Ntcham, ht), Jake Bidwell (Joel Latibeaudiere, 86), Korey Smith, Jamie Paterson, Joel Piroe.
Subs: Steven Benda, Liam Walsh, Morgan Whittaker, Liam Cullen.
West Brom: Sam Johnstone, Darnell Furlong, Conor Townsend, Kyle Bartley, Semi Ajayi, Callum Robinson (Jordon Hugill, 56), Jake Livermore (capt), Matty Phillips (Adam Reach, 84), Jayson Molumby (Robert Snodgrass, 79), Matty Clarke, Karlan Grant.
Subs: David Button, Cedric Kipre, Kean Bryan, Taylor Gardner-Hickman.
Attendance: 16, 649