Championship following their demotion last term. Thistle were relegated to the third tier in the summer after last season was stopped early by the coronavirus despite being just two points from safety with a game in hand.
However, they will now be playing in the second tier after Ian McCall's side saw off Falkirk with a 5-0 win.Zak Rudden and Scott Tiffoney were on the scoresheet as the Jags thumped their promotion rivals, while Brian Graham struck once in each half.
Joe Cardle rubbed salt into the wounds with a fifth.They now seal the League One title with a game to spare with the win over the Bairns putting them beyond second-placed Cove Rangers.
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