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The Detroit Lions opened up Thursday's OTA practice to the media, and there is an unofficial "injury report" as a result. Before we get to the injury report, keep in mind that this was the final OTA practice of the week, so some players may have simply gotten a day off, and also keep in mind that it's still only early June. If players are even a little bit sore or banged up, there's no reason to risk further injury at this point in the offseason.
With that disclaimer out of the way, here's the fairly long and highly unofficial list of players who didn't practice on Thursday (via Kyle Meinke, Dave Birkett and Josh Katzenstein):
RB Joique Bell
WR Calvin Johnson
WR Greg Salas
OT LaAdrian Waddle
TE Joseph Fauria
DE Jason Jones
DT Haloti Ngata
CB Darius Slay
CB Alex Carter
It's worth mentioning that tight end Brandon Pettigrew and linebackers DeAndre Levy and Stephen Tulloch did not take part in team drills during Thursday's practice. Also, cornerback Mohammed Seisay left Thursday's practice "after banging his head on the ground," according to Birkett. That injury apparently stemmed from a collision with Lance Moore.
Mo Seisay left practice after a collision with Lance Moore on a deep ball. (Thrown by Kellen Moore!)
— Kyle Meinke (@kmeinke) June 4, 2015
On a positive note, Johnson, Ngata and Carter are not injured. Jim Caldwell confirmed that Johnson and Ngata were absent for reasons unrelated to injuries, and Carter is apparently still finishing up his classes at Stanford.
As for why some of the other players on the above list missed practice on Thursday, it's probably a safe bet that most of these "injuries" are extremely minor based on this comment from Caldwell:
Caldwell said no injuries for Calvin Johnson and Haloti Ngata. Slay has bruises on both hands, apparently.
— Josh Katzenstein (@jkatzenstein) June 4, 2015
Like I said, if players are even a little bit sore or banged up (or bruised, in Darius Slay's case), taking extra precautions is the way to go considering this is only an OTA we're talking about.