However, that won't hide the feeling of disappointment at an early exit from the competition after Alan Archibald's side crashed out to Dundee United last night.
Retaining their Premiership status for another season is the main aim for the Jags this term and that objective hasn't changed, despite their impressive start to the new domestic campaign.
But with Rangers and Celtic both out of the competition before them, Thistle fans will be left wondering what might have been as they are left to watch the remaining eight teams do battle for the silverware.
Not for the first time this season, the Jags emerged with credit for their performance but not a victory to show for their endeavours as United claimed a 4-1 victory.
"If your strikers aren't scoring, you have got to keep clean sheets," Archibald said.
"We made a couple of errors. Conrad Balatoni slipped for the first goal, which was disappointing, because he had a good performance.
"We lost a goal from a set- play. Apart from that, I thought we were the better team. I definitely thought we were the better team."
Jags boss Archibald tinkered with the starting line-up that dominated for large swathes of their Premiership clash with Kilmarnock on Saturday before having to settle for a point, with Gabriel Piccolo, Ross Forbes, Christie Elliott and Mark Kerr all handed starting jerseys for the Tannadice clash.
The changes didn't affect Thistle's rhythm as they started brightly but a crucial goal once again eluded them, Forbes firing just wide from close range before Kris Doolan outmuscled Calum Butcher and saw his effort go agonisingly beyond Radoslaw Cierzniak's far post.
Those missed opportunities were to prove painful for Thistle, with David Goodwillie showing them the route to goal as he netted twice in quick succession to put the tie beyond the Jags before the break.
Just after the half-hour mark, the striker pounced on a rare error by Balatoni, making the most of a slip from the Firhill defender to fire Jackie McNamara's side ahead.
With the first half drawing to a close, he would beat Fox again, rising to meet Mark Wilson's corner and head beyond the Thistle keeper to leave Archibald's side with an uphill task if they were to rescue their League Cup dreams.
It didn't take long for the Firhill boss to turn to his bench in search of inspiration as Thistle looked to haul themselves back into the tie, with John Baird replacing Doolan at the head of the Jags attack.
Roared on by a vocal travelling support, the visitors continued to press and probe at the United rearguard but a Kallum Higginbotham strike from the edge of the area was as close as they would come to a reducing the leeway before more reinforcements were called for, this time in the shape of Steven Lawless.
However, chances were still limited, with Archibald's final sub, James Craigen, failing to make the most of his opportunity from a decent position.
When the net bulged for a third time, it was once again at the wrong end from Thistle's perspective, Ryan Dow finding himself in the right place at the right time to tap home after Goodwillie's low shot hit Fox's right-hand post.
Thistle did finally hit the target, Christie Elliot finishing well after bursting into the United box but on-loan Blackburn star Goodwillie would have the last word, slotting home in injury time to complete his hat-trick.
Archibald said: "That is the way football is, if we could afford him Goodwillie we would take him. Goodie is clinical. He scored three goals and that is what that kind of money gets you. I don't know what he cost but it is probably five or six of our players. You could see for yourself that that was the difference."