Aberdeen’s wretched William Hill Scottish Premiership form continued unabated as the Dons fell to their ninth defeat in the last 13 league matches against a clinical St Mirren side.
The home side were the better for most of the game, but poor defending from Slobodan Rubezic cost them two first-half goals, Toyosi Olusanya scoring the first and setting up the second for Mickael Mandron. Mandron added a third late in the game to secure the 3-0 win.
The Dons, who did pick up a morale-boosting Scottish Gas Scottish Cup win against Elgin City last week, made five changes from that side.
The visitors, themselves having lost the last four in the league, handed a first start to Callum Penman for one of two changes from the team which beat Queen of the South.
The Buddies were ahead after just seven minutes as Ross Doohan came to the edge of his area to meet Richard Taylor’s long ball, but Rubezic headed the ball past the oncoming goalkeeper and Olusanya picked up the loose ball to slide home from close range.
Aberdeen reacted well and Pape Habib Gueye, on his first start after four months out through injury, was denied from point-blank range by Zach Hemming after good work on the left by Jeppe Okkels.
Okkels himself was denied by Hemming before Topi Keskinen saw a low shot blocked by the hand of Richard Taylor, prompting a VAR review for handball which ultimately decided against a penalty.
Debutant Penman was forced off through injury 10 minutes before the visitors doubled their lead, Rubezic again failing to deal with the pace of Olusanya who shrugged off a weak nudge from the defender before cutting back for Mandron to guide the ball home from six yards.
Rubezic signalled to the bench and was replaced by on-loan Tottenham defender Alfie Dorrington immediately after the goal.
The Dons brought on Ante Palaversa at the break and he almost had an immediate impact as Alexander Jensen’s cross fell to him on the edge of the box, but his shot went over the crossbar.
Aberdeen were finding some joy on their left flank and Okkels put in another cross for Gueye, which the striker headed narrowly wide.
Hemming was forced to push a deep Palaversa free-kick, which evaded everyone in the penalty area, around the post and substitute Kevin Nisbet clipped the crossbar with a 20-yard free-kick as the hosts continued to search for a way back into the game.
Nisbet was denied by Hemming from close range with the Dons’ best chance of the match and Jensen saw his follow-up effort drift narrowly wide of the far post as the Buddies goal led a charmed life.
But any hope of an Aberdeen comeback was extinguished when another long ball, this time from Alex Gogic, found Mandron in acres of space and he lashed home a delightful effort from the edge of the area.
Follow STV News on WhatsApp
Scan the QR code on your mobile device for all the latest news from around the country