Sydney Sixers 2 for 151 (Bates 82* Perry 58) beat Adelaide Strikers 9 for 134 (Ecclestone 4-17) by 17 runs
After Alyssa Healy fell in the fourth over, charging a slower ball from Darcie Brown having not found her rhythm, Bates and Perry added 131 for the second wicket in a stand that lasted until the penultimate ball of the innings.
The pair never quite fully cut loose, but after Sixers ended the powerplay on 1 for 24 there was a steady build throughout the innings with the ninth over going for 15 and the 13th 16 runs. Bates had been 23 off 30 balls before latching onto Amanda-Jade Wellington's second over.
Perry's 58 off 44 followed her 55 off 48 in the opening match against Brisbane Heat while Bates, against her former club, made her first major contribution with Sixers. Darcie Brown's bowling stood with 1 for 20 from four overs including 14 dots. Ash Gardner faced just one ball and launched it for six.
Ecclestone then produced a direct hit from mid-on to run out the well-set Laura Wolvaardt and in her next over with the ball was rewarded for some nice flight when Tahlia McGrath drove to cover to swing the match decisively Sixers' way.
The asking rate continued to rise and the loss of Bridget Patterson and Mack in the space of three balls left far too much to do for the lower order.