In a battle of the bottom two sides, the Melbourne Renegades thumped the Sydney Thunder by eight wickets after their bowlers fired in Canberra.
Melbourne Stars' English import Alice Capsey (80no off 52) proved the match winner as the Stars upset the Hobart Hurricanes in Latrobe.
The race for the WBBL finals kicked up a notch on Monday night when the Heat held off the Strikers in a thrilling, rain-affected encounter
Hobart Hurricanes rocketed from fifth to third after beating the second-placed Brisbane Heat by six wickets in a rain-reduced match in Adelaide
The Sixers showed off their batting depth and returned to the top of the WBBL ladder with a 45-run win over the Stars, in what was a true team performance at Junction Oval
Perth Scorchers opener Beth Mooney smacked 90 to become the first player in WBBL history to notch 4000 runs in a record breaking 104-run thrashing of the Melbourne Renegades
Hobart have put themselves into the WBBL's top four after beating Adelaide for the first time since WBBL|01, thanks to Heather Graham's first Big Bash half-century
Beth Mooney's unbeaten 99 powered Perth Scorchers past ladder leaders Sydney Sixers by nine wickets and into second place on the table.
Maddie Penna's composed knock was the difference as the Strikers inched past the Stars in a low-scoring clash in Perth.
Grace Harris and Georgia Redmayne starred with the bat before Jess Jonassen and Courtney Sippel did the job with the ball as the Heat saw off the Thunder in Hobart.
Amy Edgar gave the Scorchers a late boost with the bat and it proved to be vital as Perth held on to beat the Heat by three runs
Amanda-Jade Wellington equalled her existing record for best-ever WBBL figures, taking 5-8 before Deandra Dottin hit an unbeaten fifty as the Strikers defeated the Renegades
