Zulfiqar Babar hit a six off the final ball to give Pakistan a two-wicket win over West Indies in the first Twenty20 international at Arnos Vale Stadium on Saturday.
Pakistan finished on 158 for eight in replay to world champions West Indies' 152 for seven.
Shahid Afridi made 46 for Pakistan becoming the first cricketer to hit 400 sixes in an international career in the process.
Afridi reached the landmark in the 16th over of Pakistan's reply.
Earlier, powerful late hitting by Kieron Pollard and captain Darren Sammy lifted the West Indies to a competitive 152 for seven.
Pollard's unbeaten 49 represented a welcome return to form in a version of the game in which he excels, while Sammy's blistering 30 off 14 balls completed the home side's recovery from the considerable discomfort of 42 for four after Sammy won the toss and chose to bat first.
Debutant left-arm spinner Zulfiqar was the most successful of the Pakistani bowlers, claiming the wickets of Lendl Simmons, Marlon Samuels and Dwayne Bravo at a cost of 23 runs off four overs.
The second and final match is at the same venue on Sunday.