Harrison (elbow) underwent an MRI over the All-Star break and is aiming to throw a bullpen session Saturday, Adam McCalvy of MLB.com reports.
Harrison landed on the 15-day injured list last weekend with tightness on the outside of his left elbow. The MRI results haven't yet been reviewed, but Harrison is scheduled to meet with his doctor Friday and is expected to get the green light to resume mound work this weekend. Harrison could have a chance at returning from the IL before the end of July.