Detroit scored five runs in the first inning against Grimm and blistered him for seven before he left after 3 1/3 innings en route to an easy 7-2 victory over the Rangers to open a three-game series at Comerica Park.
Grimm exited with soreness in his right forearm, but a club official said that Grimm was removed as a precaution. His spot won't be needed again until July 21, the Rangers’ third start after the All-Star break.
If he ends up on the DL, he would join left-hander Matt Harrison (back surgery) and fellow righties Yu Darvish (fatigue), Alexi Ogando (shoulder inflammation) and Nick Tepesch (elbow inflammation).
A.J. Pierzynski homered and went 3 for 4 for the Rangers, who have lost three straight games. They could get only two runs in six innings against Doug Fister, who had allowed six in three of his previous four starts.
But Grimm (7-7) had left the offense down a touchdown after two innings. The first six Tigers reached before Grimm recorded his first out, and they were 9 for 12 against him en route to a 7-0 lead after two innings.
He had retired five in a row before Miguel Cabrera dropped a single between Jurickson Profar and Leonys Martin in left-center field. Manager Ron Washington and trainer Kevin Harmon came to the mound, and Grimm walked off moments later.
-- Jeff Wilson