Marizanne Kapp, who had been ill all week in the lead-up to the WBBL final and barely left her hotel room, produced a critical all-round display to help Perth Scorchers claim their maiden title as Adelaide Strikers' powerful late-tournament surge came to a halt at Optus Stadium.

In front of a crowd of 15,511, the highest for a standalone WBBL match, the defining passages of the match were how Scorchers finished their batting innings and then started with the ball: their final five overs brought 47 runs, with vital hands from Player of the Match Kapp and Alana King, then they restricted Strikers to 2 for 16 in their powerplay with Kapp's first two overs costing just two runs and Sophie Devine producing a wicket maiden.

The middle order did their best to keep Strikers in the match with useful hands but it proved out of reach despite Madeline Penna's best efforts with 30 not out off 21 balls.

Kapp produced some superb deliveries to build the pressure on Strikers' openers and it was Devine who earned the reward when Katie Mack's extraordinary run of scoring was halted as he she drove to cover. Before this match Mack had made 332 runs in her last six innings for just one out.

Without a run added van Niekerk also departed, edging Taneale Peschel down the leg side, and by the end of the powerplay the asking rate was above nine an over.

Laura Wolvaardt and captain Tahlia McGrath rebuilt with a stand of 65 in eight overs which was forming a base from where Strikers could have run down the target. However, both fell within the space of six balls carving catches to the off-side ring which meant new batters had little time to get set.

The prolific Scorchers opening pair of Devine and Beth Mooney made a solid if unspectacular start after being put into bat, reaching 0 for 37 after the powerplay. They were immediately aggressive against Amanda-Jade Wellington who conceded more in her first four balls than she did the entire record-breaking Eliminator spell, although she would fight back well.

Neither opener could really cut loose and Strikers started to chip away at the top order. Mooney picked out mid-off, Devine was run out by a direct hit by Dane van Niekerk from short third and Chloe Piparo edged Darcie Brown who was rewarded for some rapid outswing bowling.

At 3 for 75 in the 12th the innings was at a tipping point and there was caution from Kapp and Heather Graham which threatened to leave Scorchers short. However, Kapp started to find the boundary and King made a dynamic late entrance with three boundaries in a five-ball stay.