Roston Chase scored an unbeaten 45 in an unbroken eighth-wicket stand of 61 with Keron Kottoy, who remained not out in 19, helped steer Jahmar Hamilton’s WIBest ‘B’ side to a three-wicket win over WIBest ‘A’ on today’s final day of their four-day match at the Darren Sammy Cricket Ground in St Lucia.