The ' defense has been one of the bigger surprises of 2015 so far thanks in part to their stellar play at cornerback.Unfortunately, they'll need to readjust. will be out two to four weeks with a partial pectoral Jordan Akins Jersey tear, coachTom Coughlin told the media Thursday. The former first-round pick was among the best cornerbacks in football so far this season. defensive coordinator Steve Spagnuolo returned to the team he won a with only to find the electric pa s rush he once knew severely depleted. Neverthele s, he's used Amukamara's strength on the outside to re-engineer a front four that hasn't seen practice once this season.In different situations this season, he was able to use 5-11, 240-pound fullback as a pa s rusher in order to generate some pre sure.Now, his plan likely changes. Without Amukamara, the will either turn to , a former third-round pick out of Virginia Tech, or .Here are other injuries we've been monitoring Thursday: quarterback for the second Genard Avery Jersey straight day. He was listed as a limited participant again. wide receivers Jr. (hamstring) and (calf) did not practice, coach Tom Coughlin told the media. Beckham . wide receiver (hamstring) suffered a setback in his attempt to return to the field for the first time since Week 1. Coach Jay Gruden told reporters Jackson "" during practice and his status for Week 6 is unknown. guard 's season is over. Jeff Fisher announced he will have season-ending surgery on his shoulder to repair a labral tear. Saffold has been Marvin Moody Jersey placed on injured reserve. running back (hamstring) was a full participate at practice. center is from his ankle injury and is expected to undergo a second surgery, NFL Media's Rand Getlin reported, according to sources briefed of the injury. defensive end has and will mi s the remainder of the season. He is getting surgery in the next few days and will head Kahlef Hailassie Jersey to injured reserve, NFL Media Insider Ian Rapoport reported. linebacker (illne s) returned to practice, coach Jason Garrett said. wide receiver (ankle) did not practice. wide receiver (groin) was limited in practice, the team reported. running back (groin) did not practice for the second day in a row.The ' offense is beat up, but most of its role players practiced Thursday. (knee), and (calf) were all limited participants in practice, while (concu sion) sat out. cornerback (ankle) is at practice without pads and helmet and looks like he won't be participating, NFL Media's James Palmer reported. running back was listed as a limited participant with an abdominal injury. linebacker (ankle) did not practice Thursday, the team confirmed.Niners running back (foot) warmed up, but did not participate in practice, according to the team. Tight end (knee) was limited. rookie linebacker tore his right ACL at practice and will mi s the rest of the season, coach Ken Whisenhunt D'anthony Bell Jersey told reporters. offensive tackle suffered a left leg injury during the first half of Thursday's game against the and didn't return, the team reported. Teammate Dannelle Ellerbe left the game in the second half after suffering a groin injury, according to Tracy Wolfson of CBS Sports.