Japan coach Alberto Zaccheroni challenged his players on Saturday to rediscover their best form as they prepare to battle to salvage their World Cup dream, scrapping training to give them a rest. The Asian champions lost their first match 2-1 to Ivory Coast and were involved in a drab 0-0 stalemate with 10-man Greece in their second, leaving them not in control of their destiny. Colombia have six points after two victories, with Ivory Coast second in Group C on three points. Japan and Greece both have a single point, though the Europeans have an inferior goal difference.