India today secured a World Group Play-offs berth in Davis Cup Tennis, as it defeated hosts South Korea, 3-1 in the second round of the Asia Oceania Group-I tie at Busan. Needing just one win from 2 Reverse Singles matches on the final day of the tie, Somdev Devvarman defeated Yong-Kyu Lim, 6-4, 5-7, 6-3, 6-1 to take India to the World Group Play-offs. The other Reverse Singles match was scheduled to take place between Sanam Singh and Hyeon Chug.On the opening day of the tie on Friday, India had won one of its 2 Singles matches, with Somdev recording a victory against Chug and Sanam Singh going down to Lim.In the lone Doubles match yesterday, the duo of Rohan Bopanna and Saketh Myneni prevailed over Hyung-Taik Lee and Lim Yong-Kyu in four sets to give India a crucial 2-1 lead.