Manager Rob Thomson said Saturday that Harper (hamstring) had a "good day" running the bases and that the 31-year-old will run the bases again Sunday, Matt Gelb of The Athletic reports.
Harper has been out with a low-grade hamstring strain since June 27, but he's been progressing well enough to potentially return prior to the All-Star break. He was participating in on-field drills at 70-75 percent intensity earlier this week. Harper becomes eligible to come off the injured list Tuesday.