Islamabad United overcame a blistering century by Karachi Kings opener Sharjeel Khan to record their second successive victory in the Pakistan Super League on Wednesday.

The left-handed Khan, who scored only six runs in the first six overs, plundered eight sixes and nine fours in his 105 off 59 balls to give defending champions a strong total of 196-3.

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Islamabad United Hussain Talat plays a shot during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Islamabad United overcame a blistering century by Karachi Kings opener Sharjeel Khan to record their second successive victory in the Pakistan Super League on Wednesday.

Karachi Kings' Sharjeel Khan, left, raises his bat and helmet to celebrate after scoring century while teammate Babar Azam watches during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

“It was obviously a really big chase and I thought we had to knock the teeth out of it early,” Hales said. “I felt like the pitch was getting slower as the game went on, so my plan was to be really attacking in the Powerplay, get the run rate below 10 and fortunately that worked tonight.”

Islamabad United Alex Hales plays a shot during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Iftikhar and Hussain Talat (42) then combined for a match-winning stand of 94 runs off 67 balls as Karachi's fast bowlers couldn’t get the breakthrough, with Mohammad Amir (1-44) returning with expensive figures.

Karachi Kings' Sharjeel Khan follows the ball after playing a shot for six during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Earlier, after being put into bat, Khan and Pakistan all-format skipper Babar Azam featured in a PSL record-breaking 176-run opening wicket stand against the erratic Karachi bowlers.

Karachi Kings' Sharjeel Khan, right, and Babar Azam run between the wickets during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Both batsmen fell on successive deliveries in the penultimate over of Hasan Ali (1-36), but not before Karachi erred once again in the field.

Karachi Kings' Babar Azam plays a shot during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Lahore Qalandars and Islamabad share the leaderboard with two wins from as many games in the six-team event.

Karachi Kings' Sharjeel Khan plays a shot during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Karachi Kings' Sharjeel Khan plays a shot during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

But the depth in Islamabad’s batting, led by Iftikhar Ahmed’s unbeaten 49, and an early onslaught by Alex Hales (46 off 21 balls) helped the former champions cruise to 197-5 for a five-wicket win in 19.1 overs.

Islamabad United Hussain Talat plays a shot during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Islamabad United Hussain Talat plays a shot during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

“It was obviously a really big chase and I thought we had to knock the teeth out of it early,” Hales said. “I felt like the pitch was getting slower as the game went on, so my plan was to be really attacking in the Powerplay, get the run rate below 10 and fortunately that worked tonight.”

Hales set up a strong platform for Islamabad by smashing fast bowler Aamer Yamin for 29 runs in only the third over -- the most expensive over bowled in the history of PSL.

Hales was caught out at mid off in the sixth over, but the Englishman’s clean hitting had provided a solid base of 75 runs inside the batting powerplay.

Karachi Kings' Sharjeel Khan, left, raises his bat and helmet to celebrate after scoring century while teammate Babar Azam watches during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Karachi Kings' Sharjeel Khan, left, raises his bat and helmet to celebrate after scoring century while teammate Babar Azam watches during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Iftikhar and Hussain Talat (42) then combined for a match-winning stand of 94 runs off 67 balls as Karachi's fast bowlers couldn’t get the breakthrough, with Mohammad Amir (1-44) returning with expensive figures.

Afghanistan’s experienced Twenty20 allrounder Mohammad Nabi (1-26) pegged back Islamabad’s run-chase through his offspin in the middle overs before Asif Ali finished off the game with a rapid 21 off nine balls.

“You don’t lose the tournament if you lose the second game so it’s just the start of the tournament,” Karachi skipper Imad Wasim said. “I think we’ll rectify the errors and come back very hard.”

Islamabad United Alex Hales plays a shot during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Islamabad United Alex Hales plays a shot during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Earlier, after being put into bat, Khan and Pakistan all-format skipper Babar Azam featured in a PSL record-breaking 176-run opening wicket stand against the erratic Karachi bowlers.

Khan forced Islamabad United captain Shadab Khan out of the attack by smashing the legspiner for four successive sixes in the ninth over but Karachi's bowlers overstepped at least three times which could have broken the partnership.

Babar was twice caught off Hussain’s no-balls in one over and Karachi also missed out to dismiss Khan on 70 when fast bowler Mohammad Wasim overstepped.

Karachi Kings' Sharjeel Khan follows the ball after playing a shot for six during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Karachi Kings' Sharjeel Khan follows the ball after playing a shot for six during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Both batsmen fell on successive deliveries in the penultimate over of Hasan Ali (1-36), but not before Karachi erred once again in the field.

Hales dropped a sitter of Babar at long-on before throwing the ball in time to run out Babar, who went for the second run. Babar made 62 off off 54 balls with six fours and a six.

Khan was trapped leg before wicket off the next ball when Hasan successfully overturned the decision through television referral.

Karachi Kings' Sharjeel Khan, right, and Babar Azam run between the wickets during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Karachi Kings' Sharjeel Khan, right, and Babar Azam run between the wickets during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Lahore Qalandars and Islamabad share the leaderboard with two wins from as many games in the six-team event.

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Karachi Kings' Babar Azam plays a shot during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Karachi Kings' Babar Azam plays a shot during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Karachi Kings' Sharjeel Khan plays a shot during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)

Karachi Kings' Sharjeel Khan plays a shot during a Pakistan Super League T20 cricket match between Karachi Kings and Islamabad United at the National Stadium, in Karachi, Pakistan, Wednesday, Feb. 24, 2021. (AP PhotoFareed Khan)