leg-spinner Yasir Shah took career-best figures of seven for 76 to help Pakistan to a convincing ten wicket win over Sri lanka on Sunday in Galle.After Yasir's effort helped Pakistan to bowl out Sri lanka for 206 in their second innings, the tourists started the run chase after tea and knocked off the target of 90 runs requiring just 11.2 overs.It was Pakistan's first win in Sri lanka since 2006 and their first win in Galle in 15 years. Yasir, who had taken two wickets in the first innings, spun the ball sharply and the steep bounce on the Galle surface gave the batsmen immense problems.Shah had delivered a killer blow when he dismissed star batsman Kumar Sangakkara cheaply on day four and he continued to torment the batsmen in the afternoon session. After lunch he picked up five wickets for 26 runs as Sri lanka collapsed from 144 for four to 203 all out.