Daisuke Matsuzaka took his first step back toward the mound, throwing his first bullpen session since having season-ending elbow surgery in June.
The right-hander threw 21 pitches to his catcher at the team's spring training facility in Florida, according to a report.
He will long toss on Wednesday and return to the bullpen Friday as long as there are no setbacks.
Matsuzaka Throws First Bullpen Since Surgery