Scorchers lock up top spot in front of record crowd

New Zealand star Finn Allen struck 69 off 39 after being dropped on 23 to lead the Scorchers to a six-wicket victory over the Stars.

The Perth Scorchers have locked in top spot and a guaranteed two home finals after overcoming a Haris Rauf onslaught in a six-wicket win over the Melbourne Stars.

The stakes couldn't have been higher for Saturday night's match in front of 48,608 fans at Optus Stadium, with the winners to secure the minor premiership and the losers to finish third or fourth.

Scorchers paceman Jhye Richardson snared 4-16 from 3.2 overs to skittle the Stars for 130 in 18.2 overs.

In reply, the Scorchers were reeling at 3-26 in the fifth over after Rauf (3-23) sent Mitch Marsh, Cooper Connolly and Josh Inglis packing during an inspired spell of 3-2. 

But Finn Allen, fresh off his century against the Melbourne Renegades last game, plundered 69 off 39 balls - including seven sixes - to get the Scorchers over the line with 19 balls to spare.

Allen was dropped on 23 when sub fielder Blake Macdonald grassed a tough diving chance at cover.

Aaron Hardie (41no off 37 balls) was on eight when he whacked a shot to cover and Marcus Stoinis dropped a difficult chance low to the ground.

Those two missed opportunities spelled the end of Melbourne's hopes of defending their small total. 

Hardie was also dropped on 28 late in the innings - denying Rauf a deserved fourth wicket. 

The result means Perth (7-3) finish on top of the ladder and will host either Hobart or the Sydney Sixers on Tuesday in first-versus-second 'Qualifier' battle.

If Perth win that, they will host the grand final.