Here are the key players to watch on the injury front as we march into Week 4.  We'll update this report on Friday with the latest news.

QUARTERBACKS

E.J. Manuel, Florida State - shoulder sprain, questionable to play in Week 4
Dan Persa, Northwestern - Achilles, bye in Week 4, expected to start in Week 5
Nathan Scheelhaase, Illinois - bruised shoulder, sat out a few plays vs. Arizona State, not expected to miss any time in Week 4
Andrew Manley, New Mexico State - knee injury, out for season
G.J. Kinne, Tulsa - MCL injury, out 2-4 weeks
Bryan Ellis, UAB - high ankle sprain, expected to play in Week 4
Garrett Gilbert, Texas - out for season after shoulder surgery
Will Stein, Louisville - shoulder, probable for Week 4


RUNNING BACKS

Kendial Lawrence, Missouri - hairline fracture of leg bone, could miss 4 weeks
Kenjon Barner, Oregon - sprained ankle, missed Week 2 & 3, has been practicing, probable for Week 4
Brandon Bolden, Mississippi - ankle injury, surprisingly played in Week 3, probable in Week 4
Jerrel Rhodes, Memphis - missed Week 2 & 3 with knee injury, doubtful for Week 4
Ed Wesley, TCU - re-aggravated shoulder injury, missed Week 2 & 3, doubtful for Week 4
Montel Harris, Boston College - knee, missed first 3 weeks of season, probable for Week 4
Malcolm Agnew, Oregon State - hamstring, missed Week 2, bye in Week 3, doubtful for Week 4
Mustapha Greene, North Carolina State - foot injury, expected to miss first four games of season
Zurlon Tipton, Central Michigan - foot injury, doubtful for Week 3
Raymond Sanders, Kentucky - aggravated knee injury, out for Week 4
De'Vion Moore, Missouri- high ankle sprain, doubtful for Week 4
Andre Ellington, Clemson - hamstring, probable for Week 4
Dan Herron, Ohio State - suspension, expected to return in Week 6
Donte Harden, Ohio - groin, questionable for Week 4
Warren Norman, Vanderbilt - knee, doubtful for Week 4
Darius Willis, Indiana - out for season


WIDE RECEIVERS

James Rodgers, Oregon State - recovering from knee injury, missed first two games, expected to play in Week 4
Brett Moncrief, Troy - foot injury has been a problem since the spring, expected to play in Week 3 but did not register a catch, probable for Week 4
Greg Childs, Arkansas- death in family, missed Week 3, probable for Week 4
Jarius Wright, Arkansas -left game with minor knee injury in Week 2, out for Week 3, expected to play in Week 4
Geraldo Boldewijn, Boise State- eligibility, questionable for Week 4
Josh Huff, Oregon- ankle injury, missed Weeks 2 & 3, probable for Week 4
Jeremiah Ostrowski, Hawaii - foot injury, missed Week 3, doubtful for Week 4
Michael Campanaro, Wake Forest - hamstring, bye in Week 4
Russell Shepard, LSU - off-the-field issues, probable for Week 4
Markus Wheaton, Oregon State - ribs, questionable for Week 4
Jaron Brown, Clemson - knee, questionable for Week 4
DeVier Posey, Ohio State - suspension, expected to return in Week 6
Chris Owusu, Stanford - shoulder, bye in Week 4, questionable for Week 5
TY Hilton, FIU - hamstring, was ineffective in 2nd half of Week 3, questionable for Week 4
Terrance Williams, Baylor - ankle, expected to play in Week 4
Duron Carter, Ohio State - out for season, eligibility issues
Jarrett Boykin, Virginia Tech - hamstring, out for Week 4
Marcus Rucker, Memphis - knee, out indefinitely
Ross Apo, BYU - suffered head injury Friday night, left game and did not return, status unclear for Week 5
Keenan Holman, SMU - ankle, doubtful for Week 4


TIGHT ENDS

Joe Halahuni, Oregon State - shoulder injury, probable for Week 4
Branden Barden, Vanderbilt - ankle injury, doubtful in Week 4
Jordan Reed, Florida - hamstring, questionable for Week 4
Blake Ayles, Miami (FL) - concussion, out for season
Colter Phillips, Virginia - leg injury, doubtful for Week 4
Coby Fleener, Stanford - concussion, bye in Week 4, questionable for Week 5
Philip Lutzenkirchen, Auburn - leg, questionable for Week 4


KICKERS

Philip Welch, Wisconsin - leg injury, missed all games, doubtful for Week 4
Will Snyderwine, Duke - ankle injury, questionable for Week 4
Rob Beard, Oregon - missed Weeks 2 & 3, probable for Week 4
Connor Barth, North Carolina - groin, doubtful for Week 4

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