JOSH JOHNSON THOUGHT he had somebody open. But then Philadelphia Eagles defensive tackle Ndamukong Suh flew into the quarterback's view with his hands raised. Suh grabbed Johnson's right arm and threw him backward to the ground. Johnson's helmet bounced off the field, and he knew it felt different than the other 30 sacks he had experienced in his career. He sat up unsteadily and was ushered to the San Francisco 49ers locker room to be put through the concussion protocol. But Johnson was dead set against coming out of this NFC title game.