Kolkata, May 7 (UNI) Kolkata Knight Riders rode on impactful cameos from skipper Ajinkya Rahane and Andre Russell to post a competitive 179 for 6 in their 20 overs against Chennai Super Kings, even as left-arm spinner Noor Ahmad rocked the middle order with a four-wicket haul in Match 57 of the Indian Premier League at Eden Gardens here on Wednesday.