Just three months after returning to the PSA World Tour after a three-year layoff, unseeded Pakistani Mohammad Shahnawaz toppled top-seeded compatriot Farhan Mehboob in today's semi-finals of the 1st Prime Minister FMC International Pakistan Circuit No2 to reach the final of the Challenger 10 squash event at the PSA Squash Complex in Lahore, Pakistan.

Shahnawaz, a 23-year-old from Lahore, ranked 325 in the world, fought back from a game down to overcome world No31 Mehboob 3-11, 11-6, 11-8, 11-9 in 42 minutes to celebrate his maiden appearance in a Tour final.

And it will be an all-Lahore climax in which Shahnawaz lines up against fourth seed Yasir Butt.

Butt, ranked 133 in the world, also recovered from losing the first game to beat left-hander Mansoor Zaman, a former world No11 from Peshawar, 7-11, 11-5, 11-4, 11-9 in just 38 minutes.

Butt, who has yet to win a PSA title, is celebrating his third successive Tour final and the eighth of his career.

RESULTS: PSA Challenger 10 1st Prime Minister FMC International Pakistan Circuit No2, Lahore, Pakistan

1st round:
[1] Farhan Mehboob (PAK) bt Syed Hamzah Shah Bukhari (PAK) 11-9, 11-4, 11-3 (31m)
[Q] Aqib Hanif (PAK) bt Saqib Yousaf (PAK) 11-8, 11-8, 11-6 (45m)
Mohammad Shahnawaz (PAK) bt Arshad Iqbal Burki (PAK) 12-10, 11-5, 11-9 (42m)
[3] Waqar Mehboob (PAK) bt Nasir Iqbal (PAK) 11-2 ret.
[4] Yasir Butt (PAK) bt Farhan Zaman (PAK) 11-3, 11-9, 14-16, 11-4 (49m)
[Q] Mohd Shoaib Hassan (PAK) bt [Q] Aurangzeb Mehmund (PAK) 11-6, 11-6, 11-1 (31m)
Mansoor Zaman (PAK) bt Waqas Mehboob (PAK) 11-6, 11-9, 11-7 (32m)
[2] Danish Atlas Khan (PAK) bt [Q] Abbas Ali (PAK) 11-7, 11-4, 11-3 (27m)

Quarter-finals:
[1] Farhan Mehboob (PAK) bt [Q] Aqib Hanif (PAK) 11-8, 15-13, 11-2 (42m)
Mohammad Shahnawaz (PAK) bt [3] Waqar Mehboob (PAK) 11-8, 7-11, 11-4, 11-7 (64m)
[4] Yasir Butt (PAK) bt [Q] Mohd Shoaib Hassan (PAK) 11-5, 11-7, 11-3 (34m)
Mansoor Zaman (PAK) bt [2] Danish Atlas Khan (PAK) 12-10, 11-6, 6-11, 11-2 (36m)

Semi-finals:
Mohammad Shahnawaz (PAK) bt [1] Farhan Mehboob (PAK) 3-11, 11-6, 11-8, 11-9 (42m)
[4] Yasir Butt (PAK) bt Mansoor Zaman (PAK) 7-11, 11-5, 11-4, 11-9 (38m)