Manly v Warringah – Live on 7TWO The Shute Shield’s fiercest local derby returns to Manly Oval on Saturday with both sides desperate to claim bragging rights over their rivals. Manly heads into the clash undefeated, but was far from its best in a tight win over West Harbour last week. The Marlins will be without hooker Dave Porecki, who joins the Waratahs tour of South Africa. “I think it will come down to the forward packs, it always does,” Manly fullback BJ Hartmann told Rugby News. “You need to go forward to have any sort of attack and that all starts up front. Whoever wins that battle up from will probably determine the match,” he added. Fourth placed Warringah fell just short against Sydney Uni last week, but coach Greg Marr, a former Manly player, is confident heading into the clash. “If we can play with the same intensit