Deandra Dottin’s highest score of the Hundred kept the London Spirit’s qualification hopes alive and inflicted a first defeat of the season on the Northern Superchargers on Sunday despite Jemimah Rodrigues’ third fifty in four innings.Dottin had struggled for form early in the tournament, making 54 runs in her first four innings, but found her range after shuffling down to No. 4, bringing up an unbeaten 34-ball half-century by hitting Kalea Moore for consecutive boundaries over cover to seal a seven-wicket win with two balls to spare.Rodrigues’ 57 had held the Superchargers’ innings together on a used pitch which offered some assistance for the spinners as she extended her lead as the leading run-scorer in the women’s Hundred, but their total of 126 was no more than a par score. They had scrapped hard in the field as well as with the ball to defend 109 against the Oval Invincibles on Saturday at Headingley, but could not pull off a similar heist despite Linsey Smith’s miserly spell of 2 for 15 in 20 balls.