The Tigers announced today that they’ve outrighted right-hander Montreal Robertson off the 40-man roster and assigned him to minor league camp, clearing a spot on the club’s 40-man roster.

As MLive.com’s Chris Iott writes, Robertson, who was only just added to the 40-man roster this past November, suffered a subluxation in his right shoulder while working out in the weight room last month, sidelining him for a total of six to eight weeks. That injury allowed the Tigers to sneak Robertson through waivers and clear a 40-man spot. The 25-year-old Robertson has a fastball that sits in the upper 90s but has battled control throughout his pro career. He split the 2015 season between Detroit’s Class-A Advanced and Double-A affiliates, working to a 3.31 ERA with 7.7 K/9 against 4.6 BB/9 in 68 innings out of the bullpen. MLB.com ranked Robertson as the club’s No. 26 prospect, while he placed 30th on the same list from Baseball America.