Wasteful Tonga must improve for Argentine game

By John Geddie EXETER, England (Reuters) - Tongan were not clinical enough in their 35-21 win over World Cup stragglers Namibia on Tuesday and must improve if they are to compete with Argentina, coach Mana Otai said. Tonga scored five tries against Namibia, the lowest-ranked team in the tournament, but botched a number of chances and kicked poorly at goal -- errors they cannot afford when they meet the Pumas on Sunday. "There is a lot to work on," Otai told reporters.