Allen (hamstring) is unlikely to be available for major-league game action until after the All-Star break, Justice delos Santos of MLB.com reports.
Allen has been dealing with a hamstring injury since early April but resumed baseball activities in late April. While he appeared to be trending toward a rehab assignment last month, he hit a snag in his recovery process and will likely be unavailable for at least another month. Although the 29-year-old is unlikely to rejoin the Pirates until late July, it's possible he'll be cleared for a rehab assignment before then.