"He'll likely go through more of an ultrasound, just to double check and get a view of what's going on there," Farrell said. "But his throwing progression will be gradual. Typically, we go 30-foot increments, 60 feet today. That may be a couple times before we stretch him out, but this is the very early stages of his throwing."
Veteran outfielder Chris Young ran the bases in Boston on Tuesday and will begin a rehab assignment this week with Triple-A Pawtucket. This could mean some adjusting for rookie Andrew Benintendi, who's currently platooning with Bryce Brentz in left field.
"Aggressive, came out of it good," Farrell said of Young on the basepaths. "The ideal first two days [of rehab] for [Young] would be five innings in the outfield followed by a DH game. So whether or not that's initiated tomorrow or Thursday, that remains to be seen."
• Farrell said he is still considering moving right fielder Mookie Betts out of the leadoff spot and into the middle of the order. However, with shortstop Xander Bogaerts getting a day off Tuesday, the manager said the first game of the homestand was not the day for a move.
"It would be a matter of rearranging three hitters so it's not wholesale changes, but it's something that is looked at pretty much in depth," Farrell said.
Deesha Thosar is a reporter for MLB.com based in Boston. This story was not subject to the approval of Major League Baseball or its clubs.