KARACHI - Qualifier Amjad Khan toppled seventh seed Campbell Grayson of New Zealand in five game contest in the first round to reach the PSO-sponsored Chief of Naval Staff International Squash Championship here on Monday at the Pakistan Navy Roshan Khan Jahangir Khan complex. It took Amjad 55 minutes to wear down and break the confidence of the Kiwi who staged a remarkable recovery after going into two-game deficit. Amjad took the fifth game to break the deadlock of two games all to clinch a place in the quarter-finals of the US dollar 25,000 carrying championship. Another qualifier Safeerullah Khan accounted for 8th seed Majid Khan but rather easily in just 20 minutes and in straight games. Safeerullah Khan waltz through to 11-7, 11-7, 11-2 win into the quarter-final where he would meet second seed Amir Atlas on Tuesday. Top seed Farhan Mahboob and second seed Amir Atlas won their first round matches rather easily.Farhan Mahboob took 34 minutes and four games to defeat Farhan Zaman 6-11, 11-8, 11-4, 11-5 to reach the last eight. He will meet Martin Knight of New Zealand in the quarter final. Unseeded Kiwi beat sixth seed Khawaja Adil Maqbool after a prolonged 62 minute tough battle which went 13-11, 8-11, 11-9, and 11-8 in favour of the visitor. Second seed and favourite to clinch the title Amir Atlas beat Shahid Zaman in straight games 12-10, 11-4, 11-1 to take a place in the quarter final.Fourth seed  Kashif Shuja , a New Zealand of Pakistani origin also found a place in the quarter final after winning his first round match 11-13,11-5,11-6,1-6 against Aqib Hanif,a qualifier. Result: First round matches. (Winners enter into Quarter finals). Farhan Mahboob beat Farhan Zaman 6-11,11-8,11-4,11-5 Martin Knight(NZL) beat Khawaja Adil Maqbool (Pak) 13-11,8-11,11-9,11-8. Mansoor Zaman beat Shamshul Islam Khan 11-2,2-11,11-5. Amjad Khan beat Campbell Grayson (NZL) 11-8,12-10,9-11,7-11,11-8. Yasir Butt beat Waqar Mahboob 11-2,11-8,11-3. Kashif Shuja (NZL) Aqib Hanif 11-13,11-5,11-6,11-6. Safeerullah Khan beat Majid Khan 11-7,11-7,11-2. Amir Atlas beat Shahid Zaman 12-10,11-4,11-1. Quarter final matches. Farhan Mahboob v Martin Knight (NZ). Mansoor Zaman v Amjad Khan. Yasir Butt v Kashif Shuja. Safeerullah Khan v Amir Atlas.