Kumara Sangakkara hit an unbeaten century to help Sri Lanka take a slender two-run lead in the first innings of the third and final cricket Test at Colombo today. Replying to India``s first innings total of 249, Sri Lanka were 251 for the loss of six wickets at the close of second day``s play. Brief scores: India 249 vs Sri Lanka 251/6 in 92 overs (K Sangakkara 107 batting, Chaminda Vaas 47: Zaheer Khan 2/57, Harbhajan Singh 2/81).