Sparkling centuries by middle-order batsman Kamindu Mendis and captain Dhananjaya de Silva helped Sri Lanka thrash Bangladesh by 328 runs on the fourth day of the opening test on Monday to take a 1-0 lead in the two-match series.

Having set Bangladesh a mammoth victory target of 511 after Kamindu scored 164 and De Silva 108 in the second innings in Sylhet, Sri Lanka bowled out the hosts for 182 in 49.2 overs.