Upul Tharanga struck an unbeaten 99 in 47 balls as Sri Lanka Legends defeated Bangladesh Legends by 42 runs in their Road Safety World Series Cricket Tournament fixture played in Raipur, India on Wednesday.Sri Lanka Legends posted 180 for six from their 20 overs with Tharanga leading the way stroking 11 fours and five sixes while Skipper Tillakaratne Dilshan scored 33 off 23 balls including six fours.Bangladesh, in reply, were restricted to 138.