SAN FRANCISCO -- Donte Whitner remembers obsessing over Anquan Boldin just seven months ago.As Whitner and the San Francisco 49ers' defense prepared for the Baltimore Ravens prior to the Super Bowl, the task of covering Boldin kept coming up."He's one of the toughest guys in the league to game plan for," Whitner said. "He's a receiver. He's a tight end. He's a running back. He's smart. He's everything.