Placing these players on I.R. opens up four more roster spots for Detroit.
The Red Wings have suffered an incredibe amount of injuries heading into the season.
Datsyuk (ankle) is expected to be out until November.
DeKeyser (foot) is going to miss three-to-four weeks, while Helm (concussion) and Marchenko (lower-body) are considered day-to-day.
The team also announced that they have reduced their training camp roster to 27 players on Sunday.
Top prospect Dylan Larkin remains in camp for now.
Coach Jeff Blashill told reporters that the 19-year-old has looked good, but a final decision hasn’t been made on where he will play this year.
As for Larkin, he’s just fed up of living in a hotel.
“There’s been so much speculation and so many questions, and no one really knows,” said Larkin. “Maybe the coaches know, but just to find out where I’ll be living or what’s happening — I’m kind of sick of the hotel. It would be nice to know what’s going on.”