Sydney Sixers book Big Bash final spot after Super Over win over Brisbane Heat

Sydney Sixers clinched a spot in the Big Bash final in the most dramatic of fashion, beating the Brisbane Heat in a Super Over after the two teams tied their semi-final.

Moises Henriques starred for the Sixers, smashing three sixes to set the Heat a 23 to win in the one-over eliminator. It proved to be beyond the might of Brisbane's captain Brendon McCullum and Ben Cutting, who could manage only 15 in reply.

Sixers skipper Henriques had earlier played a big part in their pursuit of Brisbane's 168-run target, blasting five fours and three sixes in a 34-ball 64.

With only 28 runs needed from the final four overs, the Sydney side seemed to be coasting to victory, till Henriques departed two balls later - the first of four wickets to fall in the closing overs.

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A run-a-ball six was required from the final over but seamer Cutting kept his nerve, conceding only five from it to force a Super Over, where the Sixers finally secured victory.

In front of a capacity home crowd at The Gabba, the Heat were put into bat first and McCullum cracked 46 off 27 balls - smoking four fours and three sixes - to get Brisbane off to a brilliant start.

But offspinner Nathan Lyon dragged the Sixers back into it, taking 4-23 from his four overs, including the key wicket of McCullum.

With the Heat suddenly struggling at 109-6 in the 15th over, Marnus Labuschagne (20 off 17) and Jack Wildermuth (29 off 16) shared a 51-run stand to lift the home side's score, before Sean Abbott (4-40) ran through the tail, taking three wickets in the final over.

In reply, the Sixers lost opener Nic Maddinson (1) in the first over, and Colin Munro (23) - after a quickfire 11-ball cameo - in the fourth.

Sydney seemed to be cruising to victory after a 99-run partnership for the third wicket between Daniel Hughes (46 off 44) and Henriques, but suddenly a cluster of later wickets meant they'd have to secure their BBL final spot in a Super Over.

The Sixers will meet the Perth Scorchers in Saturday's final, after their convincing win over the Melbourne Stars in the first semi-final.