Indianapolis Colts quarterback Anthony Richardson is believed to have a sprained AC joint after he injured his shoulder in Sunday’s 23-16 win over the Tennessee Titans.  Richardson is undergoing an MRI to confirm the initial diagnosis.

Richardson’s injury occurred after getting tackled on a 4-yard run with 4:39 left in the second quarter. His right shoulder took the brunt of the impact as he fell to the turf, indicating his shoulder was injured as he lay on the ground.  Richardson was attended to by the team’s training staff and after a few minutes and was helped up; after being examined in the sideline medical tent, he was escorted to the locker room and is said to be unable to move his right arm. Gardner Minshew came in to relieve Richardson; Minshew has 25 career starts and was the Colts’ starter in their win over the Ravens’ in Week 3.

Richardson has been plagued by injuries this season thus far; he took a hit to his right knee in the season opener against the Jacksonville Jaguars and was pulled from the game. The following week against the Houston Texans, Richardson sustained a concussion in the second quarter and missed the rest of that game and the following week against the Baltimore Ravens.  Richardson will have played in just 12 of a possible 20 quarters played by the Colts this season, including Sunday’s game.

Coach Shane Steichen said: “I think when you have a dynamic player like him, obviously, one of his skillsets is a runner [and] that makes him really good  The designed run that he got hurt on [was] something similar to last week where he popped it for a big one. So that’s stuff that you’ve got to look at, be smart with.”

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