Tribune-Review reporter Mark Kaboly reported Steelers left guard Ramon Foster suffered a "mild sprain of the right pectoral muscle" in Week 4, but the injury initially occurred in the Steelers' Week 3 loss to the Chicago Bears.
Even with it, Foster was not listed on the team's Week 4 injury report.
Team doctors initially feared the injury was more severe, a source told Behind The Steel Curtain, as Foster was unable to play in the second half of the loss. Kaboly noted Foster did return to the field for the rest of that drive - nine plays - that resulted in a field goal.
Steelers coach Mike Tomlin's press conference at 1 p.m. Tuesday will likely reveal the full extent of any other injuries the Steelers may have suffered in the loss to Minnesota. Sitting at 0-4, the Steelers head into their bye week before taking on the New York Jets on the road in Week 6.
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- Johnson, Heyward score highest grades
- Four things we learned in another Steelers loss
- Lost in the loss was an impressive debut for Le'Veon Bell
- Postgame injury report: Foster left with chest injury
- Twitter reaction to 0-4 start
- Steelers vs. Vikings final score: Minnesota paced by five sacks in 34-27 win over Pittsburgh
- Winners and Losers in Steelers loss to Vikings