Bermuda defeated Guyana 68-58 and now face a showdown with Antigua in their final Caribbean Basketball Championships game.Bermuda narrowed a 13-point first quarter deficit to seven points before overwhelming Guyana 22-5 in the fourth quarter of their game yesterday in the Bahamas.Jason Lowe continued his stellar form by leading all scorers with 29 points while veteran Sullivan Phillips scored 15 and pulled down nine rebounds.Keron Mckenzie scored 20 points for Guyana, who were outrebounded 42-29.