The outgoing champions subsided inside 47 overs for 146 after PIA skipper Kamran Sajid elected to bowl first at the National Stadium.
PIA, who need maximum points to qualify for next week's final against Habib Bank at the same venue, had already taken lead on the first innings by reaching stumps at 155-3.
Despite losing three wickets for 53 runs, PIA moved in front through the unbroken partnership of 102 between opener Agha Sabir (74) and Faisal Iqbal (49).
Aizaz was unplayable as he sliced through the Blues' middle-order to claim seven for 65 in 14 overs. Bowling to a probing line and length, the 31-year-old Sargodha-born paceman bowled five batsmen and trapped Mohammad Bilal in front for a second-ball duck.
Only promising Rameez Raja showed stomach for the PIA bowling in a 63-ball knock of 54.
Scoreboard
KARACHI BLUES (1st Innings): Hafiz Asad Baig c Tahir b Najaf 1 Rameez Raja retired hurt 54 Murtaza Majeed b Aizaz 5 Akbar-ur-Rehman b Aizaz 30 Saeed bin Nasir b Aizaz 24 Atif Ali Zaidi c Sarfraz b Aizaz 0 Mohammad Bilal lbw b Aizaz 0 Owais Ahmed Rehmani b Aizaz 0 Babar Rehman b Aizaz 25 Tabish Khan c Najaf b Kamran 5 Malik Aftab not out 0 EXTRAS: (LB-1, NB-1) 2 TOTAL: (all out, 46.5 overs) 146 FALL OF WKTS: 1-2, 2-30, 3-92, 4-94, 5-94, 6-94, 7-141, 8-142, 9-146. BOWLING: Najaf Shah 9-2-25-1; Anwar Ali 9-2-19-0; Aizaz Cheema 14-1-65-7; Kamran Sajid 5.5-1-19-1; Shoaib Malik 9-4-17-0 (1nb). PIA (1st Innings): Agha Sabir not out 74 Sarfraz Ahmed c Akbar b Tabish 7 Kamran Sajid b Malik Aftab 4 Shoaib Malik c Owais b Akbar 21 Faisal Iqbal not out 49 EXTRAS: 0 TOTAL: (for three wkts, 36 overs) 155 FALL OF WKTS: 1-8, 2-23, 3-53. TO BAT: Fahad Iqbal, Shaharyar Ghani, Tahir Khan, Anwar Ali, Aizaz Cheema, Najaf Shah. BOWLING: (to-date): Malik Aftab 12-3-33-1; Tabish Khan 4-0-28-1; Babar Rehman 6-1-21-0; Akbar-ur-Rehman 8-0-43-1; Hafiz Asad Baig 4-0-17-0; Saeed bin Nasir 2-0-13-0. UMPIRES: Ahmed Shahab and Anis-ur-Rehman. MATCH REFEREE: Naeem Ahmed.
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