New York Giants

Injuries have been piling up at linebacker, with Keenan Rob- inson (concussion), Mark Herzlich (stinger) and Devon

Kennard (soreness) missing time. J.T. Thomas (knee) came off the physically unable to perform list but is limited in practice. So when starting MLB B.J.

Goodson left practice with a back injury last week, undrafted rookie

Calvin Munson was thrust into the role of calling the defensive signals for the first unit.

“The ones (first-stringers), they expect more of you,” Munson told reporters. “If you are going to be in that role, they want you to perform well.” The kid did all right, drilling RB

Orleans Darkwa for a loss in the full team session and looking like he belonged.

Rookie watch: Thirdrounder Davis Webb was supposed to be the No. 3 quarterback behind Eli Manning and Josh Johnson or Geno Smith. Not so fast, coach Ben McAdoo said. “Josh and Geno are competing right now for the No. 2 spot, and if that doesn’t look the way we want it to look, Davis will get a crack,” McAdoo said. Webb has had few reps during camp, but neither Smith nor Johnson has been impressive, and the rookie’s workload could increase.

Noteworthy: WR Brandon Marshall says he has been impressed by the way Manning has been coaching him, testing the 11-year veteran on the hand signals and insisting on precision in his pass routes. “He’s probably the most detailed quarterback I’ve been around,” Marshall said. “He knows what he wants.” ... WR

Odell Beckham Jr. left the Browns game Aug. 21 with a sprained ankle.