Wide receiver Mario Manningham was a surprise addition to the New York Giants' injury report on Wednesday. According to the team, the wide receiver has a concussion. Head coach Tom Coughlin said Manningham will not practice and will undergo further testing to gauge his availability. Manningham underwent a test Wednesday morning before he was held out of practice. http://sports.espn.go.com/new-york/nfl/news/story?id=5629086
