Heat stunned by late Sixers onslaught

The Sydney Sixers are on the verge of securing a spot in the WBBL grand final after Erin Burns and Sophie Ecclestone lifted them to an amazing five-wicket win over the Brisbane Heat.

In reply to the Heat's 5-163 in Wednesday night's top-of-the-table clash at North Sydney Oval, the Sixers were in all sorts of trouble at 5-72 after 12 overs.

With the Sixers needing 92 off 48 balls, Burns (51no off 32 balls) and Ecclestone (47no off 25 balls) whacked the Heat attack to all areas of the park to seal a famous victory with three balls to spare.

The result extended Sydney's lead at the top of the table to three competition points over the second-placed Heat, who have only one match remaining.

It means only the third-placed Hobart Hurricanes can still catch the Sixers.

The Hurricanes must win their remaining two games and hope the Sixers lose both of theirs in order to snatch top spot.

Whomever finishes on top secures a direct berth in the grand final.

It marks a remarkable turnaround for the Sixers, who collected the wooden spoon last season despite boasting a star-studded squad.

Wednesday's result proved the fighting spirit within the side.

The Sixers needed 12 runs off the final over and Ecclestone did the job by smacking Nicola Hancock for a six, a four and two.

"I'm absolutely buzzing," said Burns, who played a crucial role in getting the team over the line in her 100th WBBL match.

"I'm just so stoked we got over the line as a team. It's always been a battle against the Heat.

"You kind of dream of these moments to be able to get your team home.

"I'm not necessarily the one that got us home - Eccy bombing sixes and fours towards the back-end was beautiful to watch."

The match was also memorable for Sixers speedster Kate Peterson, who snared 4-17 off four overs.