Injury Wrap: Andrew Luck questionable; still waiting for Arian Foster

Is 2015 the Year of the Quarterback Injury? Let’s take our first look around the Friday injury landscape.

-- Are the Colts being coy or honest about Andrew Luck? He missed some of Friday’s practice and warning sirens were immediately sounded when the team added journeyman QB Josh Johnson to the roster. But head coach Chuck Pagano says he’s confident Luck will be under center Sunday against Jacksonville. At least it’s a 1 pm ET start.

-- Arian Foster (groin) hasn’t been ruled out for Week 4, though he’s still carrying the questionable tag. Houston also has a quick turnaround for Week 5, a Thursday game, so it might make more sense to wait one or even two more games. Houston is at Atlanta this Sunday. Alfred Blue was surprisingly effective in Week 4.

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-- Drew Brees (shoulder) is listed as probable, so it sounds like we'll see him Sunday night against Dallas. That doesn't mean you have to start him, but you can at least consider it.

-- Jonathan Stewart (shin) had a full practice Friday and is tagged probable for the Sunday game against Tampa Bay.

-- LeSean McCoy (hamstring) won’t play in Week 4, and he doesn’t want to get back on the field until he’s 100 percent. Be careful what you wish for, Karlos Williams looks like a monster. Williams will be absurdly owned in most of the DFS world (no matter the respectable Giants rushing defense), and I’ll be right there with the crowd.

-- Marshawn Lynch (hamstring) looks like a game-time decision for the Monday nighter against Detroit. Thomas Rawls and Fred Jackson are the other primary backs here.

-- DeMarco Murray (hamstring) had a “full” practice Friday, for whatever that means. The Eagles basically do a walkthrough on their final day of work. Murray is listed as questionable for the Sunday game at Washington. In positive news, it sounds like the DC weather forecast has improved significantly, so we can move onto other subjects.

-- Although it seems likely Andre Ellington (knee) will play for the Cardinals, the plan is for Chris Johnson to start Week 4 against St. Louis.

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-- Melvin Gordon isn’t on the injury report, but you should know the San Diego offensive line is in a state of disrepair, so lanes could have difficult to find against Cleveland.

-- Charles Johnson (ribs) didn’t work Friday and won’t play at Denver. The Minnesota passing game is a mess anyway, with or without Johnson.

-- It’s likely Brian Quick (shoulder) will play at Arizona, not that he’s good enough to start on spec.

-- Sammy Watkins (calf) is out for Week 4's game against the Giants. Percy Harvin and Robert Woods are the theoretical beneficiaries, along with TE Charles Clay.

-- Ladarius Green (post concussion) had a full practice Friday, though he’s still listed as questionable. We’re just a week away from the Antonio Gates return.

-- Vernon Davis (knee) didn’t work Friday and sounds unlikely to run against the Pack.