The Red Sox selected Hill's contract from Triple-A Worcester on Tuesday, Robert Murray of FanSided.com reports.
Hill made just one appearance with Worcester after inking a minor-league contract in mid-August, tossing two scoreless innings on Aug. 23. The 44-year-old threw 28 pitches in the appearance, so he's not ready to be used as a traditional starter initially. Hill posted a 5.41 ERA and 1.52 WHIP in 146.1 innings with the Pirates and Padres in 2023.