COLOMBO: Rookie off-spinner Maheesh Theekshana ripped through South Africa as Sri Lanka won the third one-day international by 78 runs to clinch the three-match series 2-1 in Colombo on Tuesday.

The Proteas lost four wickets within the first 10 overs while chasing a modest 204 victory target, eventually getting bowled out for 125 in 30 overs.