New Delhi, Dec. 1 -- Asian Championships silver medallists Gurpreet Singh and Sunil Kumar lived up to their reputation clinching gold medals on final day of the Tata Motors Senior National Wrestling Championships in Jalandhar on Sunday. This was Gurpreet's fourth Senior National title. The Punjab grappler defeated two-time World Junior Championships medallist Sajan Bhanwal of Railways by 3-1. Gurpreet continued his dominance over his younger rival and registered fourth win in the five matches played between them so far. Sunil also managed an easy win over Punjab's Prabhal. The Railway's grappler used all his energy and experience to crush the Punjab wrestler by 5-1. In the 55kg category, Karnatka's Arjun, representing services, defeated Aja...