According the their official website, Detroit Lions wide receiver Calvin Johnson missed a second straight practice Thursday with some sort of knee injury.
Johnson, who has been given Wednesday as a maintenance day several times so far this season, has now missed the two most important practices of the week and he apparently wasn't on the field at all for portion of Thursday's practice that the media is allowed to observe.
According to Tim Twentyman on Twitter, Johnson said he's dealing with some "maintenance issues" but plans to play Sunday.
Calvin Johnson said he's dealing with some "maintenance issues" but plans to play Sunday in Pittsburgh
— Tim Twentyman (@ttwentyman) November 14, 2013
The last time the Pittsburgh Steelers played the Lions in 2009, Johnson was forced from the game with a knee injury after playing just 13 plays. Prior to exiting, he had caught just one pass for two yards.
In addition to Johnson being banged up, fellow wide receiver Nate Burleson is not expected to make his return to the field this Sunday despite being cleared for contact.