​The Cleveland Indians are dealing with a number of significant injuries out of the gate, and now their most prized unit has taken a hit.

Despite telling reporters after Sunday's game that he'd make his next start, pitcher ​Mike Clevinger is being placed on the 10-day Injured List with an upper back issue.

Well, this explains why the Indians wouldn't address Clevinger's situation on Monday and said an update on Tuesday would be coming.

And the news has immediately gotten worse, to everyone's surprise. 

The right-hander has been lights out for Cleveland, twirling 12 scoreless innings with 22 strikeouts in his first two outings of the season. It's not going to be easy for the Indians to make due in the meantime either, considering Adam Plutko, who would've likely slid into the rotation as a replacement, is on the shelf with a forearm strain.

The good news is that ​Clevinger will have a chance to join MLB history upon his return.

Stay tuned for who will be replacing Clevinger in the Indians rotation for at least the next six weeks. Huge blow for the Tribe's pitching staff.