Danny Lennon was thrilled as St Mirren followed up their cup heroics with a 2-1 home victory over Inverness in the Clydesdale Bank Premier League.
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The Paisley side reached the final of the Scottish Communities League Cup with a 3-2 victory over Celtic on Sunday and Steven Thompson's late header earned the Buddies their second win in four days.
Esmael Goncalves latched onto Paul McGowan's through-ball to net on his home debut and open the scoring.
Billy McKay netted his 20th Clydesdale Bank Premier League goal, this one from the penalty spot, a minute before half-time after Conor Newton felled Richie Foran inside the box.
Inverness enjoyed the majority of the possession in the second half, however they were punished for their lack of cutting edge in front of goal with nine minutes remaining when Thompson beat Antonio Reguero after connecting with Gary Teale's pinpoint cross.
"To go out there and continue, more so in the first half, where we left off on Sunday was fantastic and the only disappointment was losing a sloppy penalty on half-time," said Lennon.
"It was a terrific header for the winner from Steven Thompson; we are absolutely delighted that in the matter of three days we have managed to beat the two top teams in the league.
"I thought to a man the guys were fantastic, we played some exceptional football in the first half and the only thing that was missing at times was an end product."
Terry Butcher was left cursing his team's luck after Inverness failed to collect anything from a game that they controlled for long stages.
Inverness must now pick themselves up ahead of their William Hill Scottish Cup clash with Kilmarnock on Saturday.
"It was very hard to take," said Butcher. "We dominated the game from around the 25th minute and we are very disappointed we haven't managed to score a second goal from all the possession we had.
"It is our first loss in the league in some time and we have played much worse and lost - I would be concerned if we had played badly, however that wasn't the case."