ISLAMABAD Rising squash star Nasir Iqbal stunned heavyweight Waqar Mehboob 3-1 to reach the quarterfinals of the 8th Chief of Army Staff (COAS) Squash Championship here at Mushaf Squash Complex on Tuesday. Pakistan no. 14 Nasir Iqbal took just 48 minutes to overcome Pakistan no.5 Waqar Mehboob with the score-line of 6-11, 11-8, 11-8 and 11-8. Waqar, who has been selected for the Asian Squash Championship, could win only first game of the crucial match against a lowly ranked national lad. Waqar, who is the son of Mehboob Khan, won the first game at 11-6. However, he failed to maintain his game pace and lost other three game in similar style 8-11 as his opponent Nasir Iqbal displayed excellent skills of game and did not allow him to settle in the court. Nasir played powerful strokes while Waqar hit the tin many times. Nasir Iqbal will meet Mansoor Zaman in the next round on Wednesday (today) at same venue. Mansoor Zaman defeated Amjad Khan 3-1 in the first round. Later, Pakistan no. 17 Shoaib Hasan claimed an upset victory by thrashing Pakistan no.9 Safeer Ullah Khan in straight games 3-0. Shoaib finished all three games in same fashion and conceded eight points in each game. He will take on Yasir Butt in the next round. Pakistan no.1, defending champion Aamir Atlas Kha, Mansoor Zaman, Danish Atlas, Farhan Mehboob and Yasir Butt also qualified for the top-eight stage of the championship by beating their rival on Tuesday. Meanwhile, in the WISPA event, Maria Toor, Riffat Khan, Zoya Khalid, Saima Shoukat, Aliya Sarfaraz, Rushna Mehboob and Moqaddas Ashraf advanced into second round of the tournament by outplaying their respective challengers here at same venue. Second round will be played on Wednesday (today) at same venue. Results (men): Aamir Atlas (WAPDA) beat Farhan Zaman (NWFP) 11-5,11-6,11-6 (18 mint) Aurangzeb Mehmund (Pb) beat Aqib Hanif (Pb) 9-11,11-8,12-10,12-10 (54 mint) Mansoor Zaman (PIA) beat Amjad Khan (NWFP) 9-11,11-7,11-8,11-8 (36 minutes) Nasir Iqbal (PAF) beat Waqar Mehboob (ZTBL) 6-11,11-8,11-8,11-8 (48 minutes) Shoaib Hassan beat Safeer Ullah (PAF) 11-8,11-8,11-8 (27 mint) Yasir Butt (WAPDA) beat Sheikh Saqib (Pb) 11-8,11-7,11-13,11-2 (35 mint) Danish Atlas (PAF) beat Zahir Shah (NWFP) 14-12,11-5,11-6 (23 mint) Farhan Mehboob (WAPDA) beat Waqas Mehboob (PAF) 9-11,12-10,11-3,11-5 (30 mint). Results (women): Maria Toor (WAPDA) beat Amna Latif (Pb) 11-0,11-3,11-1 (11 mint) Riffat Khan (Pb) beat Anosha Asim (Pb) 11-1,11-3,11-9 (14 mint) Zoya Khalid (ZTBL) beat Noor Fatima (Pb) 11-2,11-4,11-3 (12 mint) Saima Shoukat (WAPDA) beat Gul Zaman (Pb) 11-4,11-1,11-5 (12 mint) Aliya (WAPDA) beat Mehwish Hanif (Pb) 11-6,11-2,8-11,11-4 (18 mint) Rushna Mehboob (ZTBL) beat Sadia Gul (PAF) 11-4,11-6,11-4 (13 mint) Amna Mehboob (Pb) beat Zahab Khan (Sindh) 11-4,11-4,9-11,11-8 (22 mint) Moqaddas Ashraf (WAPDA) beat Monisa Nasir (Pb) 11-4,11-6,11-3 (14 mint).