SEATTLE -- Toronto closer Jordan Romano left Tuesday night's All-Star Game because of back tightness.

The 30-year-old right-hander entered in the seventh inning and retired Will Smith on a flyout. Lourdes Gurriel Jr. followed with a fly deep down the left-field line that initially was called a home run by Ryan Blakney but was reversed by replay umpire Jim Wolf in a video review.

While the review was taking place, Detroit's Michael Lorenzen relieved.

Romano threw five pitches in the American League's 3-2 loss. The Blue Jays said Romano had left lower back tightness.

"He threw his last pitch in the bullpen before he went out there, he just felt a little tightness in his lower back, and we got to take every precaution to take care of these players," AL manager Dusty Baker of Houston said. "We hope that it's nothing."