A brilliant unbeaten half-century by South Africa's Hashim Amla helped the World XI win the thriller that was the second T20 by seven wickets and level the series at Gaddafi Stadium in Lahore on Wednesday and let the last T20 global be the series decider.
The series is locked at 1-1 with Pakistan winning the first match by 20 runs while World XI won the second game by 7 wickets.
Perera took the finishing duties on himself, hitting two sixes in the 19th over bowled by Sohail Khan, and had luck on his side, being dropped at the long-of boundary.
Left-hander Fakhar Zaman (21) hit Australian seamer Ben Cutting for three boundaries in the second over of the innings but was trapped leg before wicket by West Indies leg-spinner Samuel Badree (2-31). Opener Hashim Amla remained cool-minded throughout the innings and scored 72 runs after playing 55 balls and hitting 5 fours and 2 sixes.
And then needing 13 runs in the final over, the burly-built Perera gave little trouble to his senior partner Amla, as the former completed the job in style. England's 2010 WT20-winning captain Paul Collingwood also took the place of Grant Elliott, adding valuable experience to the team, having already toured Pakistan back in 2006. He was ably assisted by hero of the first match Babar Azam, who once again played a sensible innings, and collected 45 runs off 38 balls with the help of five fours.
Their hearts would ultimately be broken when Perera hit Rumman Raees straight down the middle for a maximum to hand the World XI an unlikely victory.
Both the teams made two changes to their playing XI.
Shoaib tried to lift the run-rate and in the process cracked three sixes and a four in a 23-ball 39 but he did not get support from the other end. Pakistan: Ahmed Shehzad, Babar Azam, Sarfraz Ahmed (capt, wk), Shoaib Malik, Usman Khan, Fahim Ashraf, Umar Amin, Mohammad Nawaz, Imad Wasim, Aamer Yamin, Shadab Khan, Fakhar Zaman, Hasan Ali, Rumman Raees, Sohail Khan.
In the end, the momentum lost during his stay could have proven to be costly for the World XI if not for Perera's late assault.
After he ended with figures of 2 for 23, he used the long handle to devastating effect and walloped 47 off a mere 19 balls to help World XI keep the series alive.