KARACHI - Pakistan team vice-captain Sarfraz Ahmed is all set to take another challenge as he would face stiff competition with another young wicket-keeper cum batsman M Rizwan. The selectors have given chance to Rizwan in the side for the first time in the series against Bangladesh. Obviously, Sarfarz will be the first choice of team but in case of no performance, he could be in little trouble. Sarfraz said it would be a healthy competition between Rizwan and him. The better performer should be part of the side, he added.