Having his rehab assignment clock restarted during the All-Star break, Middlebrooks could hypothetically spend 19 more days with Triple-A Pawtucket as he continues to recover from a fractured right index finger that has shelved him since May 17.
"He'll continue to play every day at third base at Pawtucket," Red Sox manager John Farrell said. "I think the one thing that we want to be sure of that will continue is to get every day at-bats. For the time being that will take place at Pawtucket."
Farrell originally suggested on Friday that Middlebrooks could be activated before the team takes off on a seven-game road trip Monday.
However, with a crowded left side of the infield at the major league level, Farrell made it clear that the team will continue to prioritize consistent playing time for Middlebrooks before his activation. In nine games with Pawtucket since the start of July, Middlebrooks has hit safely in seven contests (7-for-29) with a home run and five RBIs.