PUNE: A lanky Ramkumar Ramanathan was fluent in his win over Finn Tearney while Yuki Bhambri struggled past Jose Statham as India completed an emphatic 4-1 victory over New Zealand in the Davis Cup Asia/Oceania Group I tie, here on Sunday. Ramkumar sealed the tie for the hosts by thumping Tearney 7-5, 6-1, 6-0 in two hours in the fourth rubber before Yuki won the dead fifth rubber against Statham 7-5, 3-6, 6-4 in one hour and 55 minutes.