Clydesdale bowler Haq went into the clash at the Grange level with John Blain on 41 ODI wickets but took three more in the first innings to move himself clear on 44.
But after limiting the tourists - who won the toss and chose to bat - to 231 for seven, the Scots could not keep up with the run rate and slumped to a 96-run defeat after posting just 135 all out. And it was Haq who was left with a red face after he was caught lbw by Junaid Khan on the first ball he faced.
The 30-year-old was only introduced after Preston Mommsen (15) had walked when he was stumped by Kamran Akmal from Saeed Ajmal's delivery, while David Murphy (seven) then followed him back as Khan made it three wickets in as many balls with another lbw. Iain Wardlaw (four), however, survived Khan's attempt at his hat-trick.
The match had been Northamptonshire batsman Kyle Coetzer's first as Scotland skipper after he was named Gordon Drummond's replacement earlier this week. And he led by example as he top scored for the home side with 32.
But in the end it proved to be a simple job for Pakistan to rattle through Scotland's lower order, with Rob Taylor (13) falling at the death as Ajmal claimed another lbw to leave him tied on three wickets alongside Khan.
The slow pitch at the home of Scottish cricket seemed to catch out the tourists early on, with Nasir Jamshed (20) first to fall while Mohammad Hafeez (18) followed as Haq grabbed his first wicket of the day when Josh Davey caught the batsman at backward point.
Imran Farhat missed out on his half century as he was then bowled by Haq's fellow spinner Matt Machan while attempting an ugly slog on 46. Haq did the same to Asad Shafiq (nine) before claiming Umar Amin (three) as he tried and failed to smash the ball over Rob Taylor at deep mid-wicket, while Akmal mustered just 12 before being trapped lbw by Neil Carter.
Pakistan's attempt to manufacture a quicker run rate up until this point had only led them into trouble but the 51-run seventh-wicket partnership by skipper Misbah-ul-Haq and Ajmal steadied their nerves before the latter fell for 28 as he tried an orthodox scoop off Wardlaw's delivery, only to see it carry straight on and hit his stumps.
Misbah carried on past his half century to finish 83 not out and set up a tally the proved much too high for the Scots. The teams will meet again in the second leg of their ODI double-header on Sunday.
- Sports & Recreation
- Saeed Ajmal
- Junaid Khan
- Kamran Akmal