Sachithra Senanayake struck a six off the penultimate ball to give Sri Lanka a two-wicket triumph over South Africa on Sunday in the final match of a five one-day international series won 3-2 by the hosts.

Captain AB de Villiers and predecessor Graeme Smith (125 each) hit tons as South Africa made 312-4, but a century from Kumar Sangakkara (102) led the tourists to 314-8 at the Wanderers and a second success within three days.