Westmoreland will continue to undergo physical and occupational therapy as an outpatient at Spaulding.
"He's a remarkable young guy," assistant general manager Ben Cherington said before Tuesday's game against the Blue Jays. "He's been incredibly courageous through this ordeal. He's making steady progress, and he's working very, very hard at it."
"He has been making steady progress and is in great spirits," said a team release.
Westmoreland, 19, underwent surgery at the Barrow Neurological Institute at St. Joseph's Hospital and Medical Center in Phoenix to remove a cavernous malformation in his brain. After spending several days at that facility, he made significant gains in his rehabilitation and was cleared to return to Boston to continue the recovery process.
Larry Millson is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.