Roston Chase of West Indies celebrates his century during the 1st day of the 2nd Test match between West Indies and Pakistan at Kensington Oval, Bridgetown, Barbados, April 30, 2017. Pic/ AFP

Bridgetown: An unbeaten second Test century by Roston Chase helped the West Indies score 286/6 on the opening day of the second Test against Pakistan at Kensington Oval here.