MINNEAPOLIS -- Tyson Ross became the latest Tigers starting pitcher to hit the injured list on Sunday when Detroit revealed the right-hander is dealing with right elbow ulnar neuritis.

Ross started to feel the injury in Friday¡¯s start when he gave up six runs over five innings in a loss to Minnesota. Ross received treatment and didn¡¯t feel any better when he went to throw before Sunday¡¯s 5-3 win over the Twins, necessitating the move.

¡°It¡¯s something waking up the next day, I was hoping it was going to be feeling better, but it wasn¡¯t,¡± Ross said. ¡°A couple days of treatment now, it hasn¡¯t really improved and I wouldn¡¯t be on track to make the next one.¡±

The Tigers also announced after Sunday¡¯s win in Minnesota that second baseman Josh Harrison would be activated from the injured list for Monday¡¯s home game against the Astros. Harold Castro is being optioned to Triple-A.

Ross, 32, is 1-5 with a 6.11 ERA in seven starts this season. He dealt with a back injury while also missing time due to the birth of a child. The elbow injury is the latest setback for Ross, who has also had his career interrupted by thoracic outlet surgery.

¡°It¡¯s something weird,¡± Ross said when asked to describe the pain. ¡°It¡¯s weird. We¡¯ll leave it at that.¡±

Detroit is already without Michael Fulmer (Tommy John surgery), Matt Moore (right knee sprain) and Jordan Zimmermann (right elbow UCL sprain) in the rotation.

As for the rotation, ¡°We¡¯re working on it as we speak,¡± said Tigers manager Ron Gardenhire. ¡°We¡¯re going to have to find some, we¡¯ve got a couple of holes here. [Ryan Carpenter is] going to start and we¡¯ll have to figure out another one. It may be a bullpen day, if we have one left. ... This is kind of one of those things where he¡¯s OK, but we¡¯ve got to give him some time here.¡±

Carpenter is scheduled to make his second start this season on Tuesday. Matthew Boyd pitches Monday, and the team got a boost from Daniel Norris' 6 1/3 effective innings on Sunday.

¡°Anytime you got to go on the IL, it¡¯s concerning,¡± Ross said. ¡°But hopefully it can be a short stint and I can get back out there and help the guys out.¡±

Harrison, who has been out since April 27 with a left shoulder contusion, finished a rehab assignment with three games at Class A Advanced Lakeland where he hit .273/.333/.273.