Isaac Price inspired West Bromwich Albion to a 3-1 comeback win against promotion favourites Burnley in the Sky Bet Championship.
The Northern Ireland international scored twice in the second half at The Hawthorns after setting up Harry Whitwell's equaliser to cancel out Callum Styles' own goal.
Burnley, without star striker Zian Flemming with a calf injury amid interest from Lille, failed to match their lofty billing in a disappointing second-half display.
After the loss, Burnley boss Nicky Hayen could not confirm whether Flemming would stay at the club before the window closes on September 1.
He told Your Site: "If there is an offer that suits the finances of the club, then maybe the transfer can be done, but I want him to stay.
"Everyone has the ambition to play in the Premier League, so if he can make that step then okay, everything should be in place, but as long as that's not the case, Zian stays with us."
Albion continued their 100 per cent start to the season, gaining their third straight win in all competitions and second in the league to lie second in the early table behind Millwall on goal difference.
But Burnley suffered their first defeat of the campaign as new boss Nicky Hayen still awaits his first Championship win.
In a fast and furious start, there were two goals in the first 18 minutes.
Styles put into his own net in the eighth minute from Jacob Bruun Larsen's cross. Albion complained that Hannibal Mejbri fouled Felix Horn Myhre in the build-up some 70 yards away, with several passages of play unfolding before the goal.
Whitwell equalised in the 18th minute when he slotted home low to Max Weiss' left from 12 yards for the 20-year-old's first Albion league goal.
But it was Burnley who went closest to scoring again when Bruun Larsen sidefooted against the foot of the post from Marcus Edwards' searching cross.
It was a different story after the break. Inspired by Price, Albion produced a dominant second-half performance, with the perfect start.
Price put them ahead for the first time, in the 46th minute, curling the ball beyond Weiss, who had strayed five yards off his line, into the far corner.
Burnley made a triple change in the 57th minute with the arrival of Ugo Raghouber, Zeki Amdouni, and Dastan Satpayev.
Instead, it was Albion who struck next to effectively seal it, after Bashir Humphreys upended Whitwell for a clear penalty.
Price made no mistake from the spot, firing low to Weiss's right with the 'keeper going the wrong way.
West Brom boss James Morrison speaking to Your Site:
"When you start the pre-season and see the fixtures come out and see the opposition you're like, 'Oof, welcome back!'
"But it was an opportunity to impose ourselves, and we've been doing that, and it's my job to keep us firmly on the ground.
"It's been two games, and it's going to be a long, hard season with ups and downs, but we've got to keep working hard on the training pitch and see what happens."
Burnley boss Nicky Hayen speaking to Your Site:
"It was totally deserved. They had much more energy than us, winning duels and second balls.
"We played too slowly and were far away from the level last week.
"If we play at our best, we're a top team, but if you play like this, you're an average team, and we have to go back to what we did last week because today we weren't good enough."
