NORTH SOUND, Antigua - West Indies lost a golden opportunity to take a firm foothold in the first Test after Jonny Bairstow struck an imperious unbeaten hundred to power England, on a compelling opening day at the Vivian Richards Cricket Stadium on Tuesday.Marquee seamer Kemar Roach snatched two wickets in an incisive opening spell to help reduce England to 48 for four before lunch but Bairstow’s 109 not out – his eighth Test century and first against West Indies – hauled England back from the brink.With help from wicketkeeper Ben Foakes who made 42, all-rounder Ben Stokes, who chipped in with 36 and Chris Woakes, who hit an unbeaten 24, England finished the day strongly on 268 for six, after dominating the two final sessions.