Islamabad United knocked out Karachi Kings from the PSL with a comprehensive nine-wicket triumph at the Dubai International Stadium on Saturday.
The result was never in doubt once they restricted Kings for the lowest PSL score of 111-9 after Sami claimed 5 for 8.
United replied with 115-1 in 14.2 overs riding on unbeaten half centuries from Smith (50) and Haddin (52) who shared an unbroken stand of 97.
Peshawar Zalmi await United on Sunday with the winner going on to meet Quetta Gladiators in the final on Tuesday.
Smith smashes a boundary off Sohail to complete his 50 as United win by 9 wickets to advance to the Qualifying Final.
Haddin completes a 27-ball half century, his second in succession.
Haddin sizzles hammering Usama for a boundary and towering six. United 94-1, 11 overs.
The 50 partnership between Smith and Haddin comes off just 34 balls as United race towards the target. United 81-1, 10 overs.
Haddin is on fire using his feet and lofting Wasim for a couple of sixes. United 67-1, 9 overs.
Haddin crashes Mir through the covers for a boundary. United 49-1, 8 overs.
Smith is in red-hot form punching Amir through point for a boundary. United 38-1, 6 overs.
Spin introduced and Smith launches Wasim straight into orbit for the first maximum. United 31-1, 5 overs.
Sohail draws first blood after being hit for a boundary early in the over by Sharjeel who chips and fails to clear mid on. United 18-1, 3.3 overs.
Sharjeel Khan c Iftikhar Ahmed b Sohail Khan 9 (9b 2x4)
Smith picks up a couple of boundaries off Sohail through point and an inside edge as Islamabad begin chasing 112. Unied 9-0, 2 overs.
Islamabad restrict Karachi to 111-9 with Sami claiming 5 for 8 while Ravi Bopara top scored with 37.
Sohail Khan c Khalid Latif b Russell 7 (10b)
Sami is on a hat-trick after claiming his fifth wicket as Usama holes out to midwicket. Kings 100-8. 18.3 overs.
Imad Wasim c Asif Ali b Sami 6 (4b 1x4)
Sami picks up his 100th T20 wicket as Wasim hits straight to point. Kings 100-7, 18.2 overs.
Imad Wasim c Asif Ali b Sami 6 (4b 1x4)
Sami is on fire as Ten Doeschate attempts to pull only to nick it behind. Kings 89-6, 16.5 overs.
Ryan ten Doeschate c Haddin b Sami 16 (23b)
Smith takes a brilliant catch at deep square leg to send back Bopara. Kings 88-5, 16.3 overs.
Ravi Bopara c Smith b Sami 37 (36b 1x4 1x6)
Bopara decides to up the ante launching Khalid over extra cover for a maximum. Kings 74-4, 14 overs.
Karachi are imploding as Ifthikar perishes. Kings 39-4, 8.2 overs.
Iftikhar Ahmed c Russell b Badree 8 (14b 1x4)
Irfan strikes as Malik tries to pull only to get a big nick to be caught behind for a duck. Kings 29-3, 5.3 overs.
Shoaib Malik c Haddin b Irfan 0 (4b)
Russell takes a superb return catch as Simmons fails to negotiate a fullish delivery. Kings 28-2, 4.4 overs.
Lendl Simmons c & b Russell 19 (18b 3x4 1x6)
Wessels attemps to play an audacious sweep shot off Sami only to find his stumps shattered. Kings 20-1, 3.2 overs.
Riki Wessels b Mohammad Sami 1 (5b)
Simmons has clubbed s short ball from Irfan over midoff for a towering six with a forehand smash. Kings 20-0, 3 overs.
Simmons finally breaks the shackles by slashing Irfan through point for a boundary followed by slapping him to long on.
Irfan bowls a brilliant opening over to Simmons beating the bat on several occasions but unlucky not to get an edge. Kings 0-0, 1 over.
Islamabad United have won the toss and opted to bowl in the 2nd Qualifying Final of the PSL at Dubai International Stadium on Saturday against Karachi Kings which is virtually a knock-out clash.
United have left out Saeed Ajmal, Azhar Mahmood and Ashar Zaidi to bring in Imran Khalid, Andre Russell and Samuel Badree.
For Karachi Ryan ten Doeschate, Iftikhar Ahmed, Imad Wasim and Mir Hamza come in.
Karachi Kings and Islamabad United vie for a tussle against Peshawar Zalmi in the Eliminator Playoff at the Dubai International Cricket Stadium on Saturday.
United, led by Misbah-ul-Haq, have been bolstered by veteran Azhar Mahmood who came into the side after Australian batsman Shane Watson was ruled out of the remainder of the Pakistan Super League (PSL) with abdominal injury on February 13.
Kings, face a mountainous task under a new captain Ravi Bopara after Shoaib Malik stepped down from the role in a surprising move a day ago.
The Karachi side have had a poor campaign throughout the league, winning just two out of their eight matches, and only got through to the next round on a better head-to-head record against Lahore Qalandars.
On Friday, a jam-packed Dubai stadium witnessed a thrilling finish to Pakistan Super League's (PSL) 1st Qualifying Final as Quetta Gladiators sealed a sensational one-run victory over Peshawar Zalmi.
The winner of Saturday's game will face the Shahid Afridi-led Peshawar side in the 3rd Qualifying Final on February 21.
Islamabad United: Amad Butt, Ashar Zaidi, Asif Ali, Azhar Mahmood, S Badree, BJ Haddin, Imran Khalid, Kamran Ghulam, Khalid Latif, Misbah-ul-Haq, Mohammad Irfan, Mohammad Sami, Rumman Raees, AD Russell, Saeed Ajmal, Sharjeel Khan, DR Smith, Umar Amin
Karachi Kings: Bilawal Bhatti, RS Bopara, Fawad Alam, Iftikhar Ahmed, Imad Wasim, Mohammad Amir, Mushfiqur Rahim, Nauman Anwar, Saifullah Bangash, Shahzaib Hasan, Shakib Al Hasan, Shoaib Malik, LMP Simmons, Sohail Khan, Sohail Tanvir, Usama Mir, JM Vince, MH Wessels