Ellyse Perry's 81 wasn't enough as Amanjot Kaur (3 wickets, 34 runs), Harmanpreet Kaur (50), and Nat Sciver-Brunt (42) secured a last-over thriller.
Chinelle Henry's blistering 23-ball 62 outshone Jess Jonassen's four-wicket haul and Jemimah Rodrigues' fifty as the Delhi Capitals fell short.
Ellyse Perry's unbeaten 90* and Danni Wyatt-Hodge's 57 weren't enough as Sophie Ecclestone's 33 (19) and Super Over brilliance, defending 8 runs, clinched the win.
The Delhi Capitals' pacers dominated with seven wickets, setting the stage for Jess Jonassen's unbeaten 61* (32) and Shafali Verma's 44 to seal the chase.
Nat Sciver-Brunt starred with three wickets and an unbeaten 75* (44), partnering with Hayley Matthews (59) to secure the win.
Tanuja Kanwer's disciplined 2/16 helped the Giants restrict RCB to 126, with Ash Gardner (52) and Phoebe Litchfield (30*) easing them to victory.
Jess Jonassen and Minnu Mani's three-wicket hauls triggered MI's collapse, while Meg Lanning (60*) and Shafali Verma (40) ensured a comfortable chase.
N Charani and Shikha Pandey impressed with two wickets each before Shafali Verma (80*) and Jess Jonassen (61*) sealed a commanding win for Delhi.
WPL 2025 now heads to Lucknow for its third leg as the qualification race intensifies, with the final Mumbai leg looming ahead.