Sherfane Rutherford hit an unbeaten half-century and earned a five-wicket win for Quetta Gladiators over virus-stricken Karachi Kings in the Pakistan Super League on Thursday. Rutherford smashed 58 not out off 31 balls with six towering sixes and a match-winning boundary off the final ball as Quetta recovered from a middle-order collapse to reach 169-5 for their fourth win in five games.