Colts sign Josh Johnson, furthering concern around Andrew Luck's health

The Indianapolis Colts have signed quarterback Josh Johnson, according to Adam Schefter of ESPN.

What It Means:

Ruh roh. Quarterback Andrew Luck did not practice Friday, according to Zak Keefer of the Indy Star, and wasn't even at warm-ups. Luck is considered questionable, but this is the point where you start to hit the panic button if you own Luck in a season-long league.

A potential injury could provide a glimpse into why Luck has struggled so mightily to start the season. His 9.76 Passing Net Expected Points (NEP) sit 16th in the league at the moment. If he can't go, it'll be Matt Hasselbeck getting the start, which would lead to a significant decrease in the expected output of the Colts' skill-position players.