We knew Brown had a hamstring issue, which is something that plagued his 2015 season, but now we know the root cause.

WEEK 7 PICKS: Straight up | Against the spread

A blood test performed on the wideout concluded that Brown has sickle-cell trait, which the team believes has caused some of his injury problems.

Via the CDC:

Brown and the team said they are thankful they now know the cause of his injury history.

Arians hasn’t ruled Brown out of Sunday’s game against the Seahawks and said Brown could wake up that morning and feel absolutely fine.