The Quetta Gladiators participated in what event against Peshawar Zalmi, held at Gaddafi Stadium?
Quetta Gladiators in 2017:  They finished runners-up for the second time after losing the final against Peshawar Zalmi. 2017 Pakistan Super League Final: The 2017 Pakistan Super League Final was a Twenty20 cricket match played on 5 March 2017 at the Gaddafi Stadium in Lahore, Pakistan to determine the winner of the 2017 Pakistan Super League.
2017 Pakistan Super League Final