Skipper Yuvraj Singh struck a brutal 123 off 89-balls (8 fours, 7 sixes) to lead India A to a thumping 77-run victory over West Indies A in the first of the three-match unofficial ODI series in Bangalore on Sunday. Batting first, India scored 312-4 in the reduced 42-over match and bowled out the visitors for 235 in 39.1 overs.