38 Tyson Ross SP

Ross has been battling a stiff back, so his next start will be pushed to Friday against the Twins, Evan Woodbery of MLive.com reports.

In an effort to give him an extra day of rest, the Tigers have moved Ross's outing from Thursday to Friday. Ryan Carpenter is expected to be called up from Triple-A Toledo and toe the rubber Thursday.

Ross (1-4) took the loss against the Royals on Saturday by giving up five runs on seven hits over 1.1 innings. He struck out one and walked two.

Ross faced only 13 batters but managed to give up four extra-base hits as he was unable to get through the second inning. It's the first time in six starts this season the right-hander hasn't completed five frames. The 32-year-old has a 5.34 ERA, 1.62 WHIP and 23:14 K:BB across 30.1 innings to begin the year, and lines up to pitch Thursday versus the Angels.

Ross is slated to start Saturday's game against the Royals.

Ross rejoined the team Friday after spending the full three days on the paternity list following the birth of his child. Due to a pair of off days this week, the Tigers weren't forced to add a spot starter to the mix in Ross' stead. Detroit won't require a replacement in the rotation for the injured Jordan Zimmermann (elbow) until the May 11 doubleheader in Minnesota.

Ross was reinstated from the paternity list Friday.

Ross was unable to make his scheduled start Tuesday as he left the team to attend the birth of his child. The 32-year-old has a 4.03 ERA, 1.38 WHIP and 22:12 K:BB over his first five starts and figures to return to the starting rotation this weekend against the Royals.

Ross won't make his scheduled start Tuesday against the Phillies after the Tigers placed him on the paternity list.

Detroit oddly chose to move Ross ahead of Spencer Turnbull in the pitching schedule to begin the week, and the fact that the former was awaiting the birth of his child now seems to provide an explanation behind that decision. The change ultimately didn't come to pass, as Ross will now be unavailable for the next three days while Turnbull will take the hill Tuesday and line up for his second start of the week Sunday versus the Royals. Ross is slated to rejoin the Tigers on Friday and could start that same day in the team's series opener with Kansas City.