A final over shut down from Spartan quick Mark Steketee has secured a first-up victory for the Brisbane Heat over the Adelaide Strikers.

After cruising in what would have been a record run-chase, the Strikers collapsed in the final overs as the Heat seamers conjured up their own Christmas miracle.

Pursuing 207 for victory, Adelaide openers Ben Dunk and Jake Weatherald (52) made a mockery of the chase, combining for a 133-run first wicket stand before the latter fell at the start the 12th over.

Dunk followed in the next, bringing to an end his 43-ball hand of carnage that included eight x 4’s and five x 6’s in his 85.

Still, the Strikers appeared safe with Brad Hodge and Travis Head at the crease but the match would take another twist.

Head top-edged Spartan Mitchell Swepson and when Kieron Pollard fell in the next over the equation began to balloon on the hosts.

With 17 required off the final over, Steketee showed nerves of steel, removing Jake Lehmann and Chris Jordan in a 10-run win for the Heat.

Their imposing total was piloted by a 90-run opening stand between Jimmy Pierson and Brendan McCullum, but just like the Strikers’ reply, wickets fell in clusters.

Pollard made a double breakthrough and it took some power-hitting from Chris Lynn (29) and some creative work from Alex Ross (64) to keep momentum flowing.

A crowd highlight came at the back end of the innings when Spartan Joe Burns (10 n.o.) hooked a six into the waiting hands of an Adelaide Oval security guard positioned at backward square leg.

The tournament now moves to Melbourne with Spartan crowd-pleasers Brad Hogg and Andre Russell set to go head-to-head when the Renegades host the Thunder.