Boston Red Sox starting pitcher Daisuke Matsuzaka throws a pitch in the second inning against the New York Yankees at Yankee Stadium in New York

Boston Red Sox right-hander Daisuke Matsuzaka spent more time on the sidelines during spring training than he did on the mound due to a combination of shoulder and neck injuries.

He took his first step toward a possible return to Boston by pitching five pain-free, scoreless innings Saturday against Rochester as he began a 30-day rehab assignment with Triple-A Pawtucket.

Pawtucket won the first game of a makeup doubleheader, 1-0.

Matsuzaka, who’s been on Boston’s disabled list since April 3 with a neck strain, walked one, struck out three and hit two batters.

He threw 43 of 73 pitches for strikes and reached 93 mph on McCoy Stadium’s radar gun.

“I felt I had a good feel on the ball today,” Matsuzaka said through an interpreter. “The best thing was I didn’t experience any problems (read discomfort) and I had good command of my fastball.”

The only hits he allowed were a line-drive double by Jacques Jones in the third and a fly-ball double down the right-field line by Luke Hughes in the fourth.

Rochester loaded the bases with two outs in the fifth on a walk and two hit batters.

Matsuzaka escaped this jam by retiring Matt Tolbert on a foul popup to third.

“This is the first time I was able to go through my normal routine going into a game,” Matsuzaka said. “Until this point, I‘ve been pitching in simulated games and pitching in relief. It was a little difficult to grasp my routine but I think I was able to do that and go about business in a normal way today.

“My fastball was good but my slider and changeup weren’t that great. I think I really need those two pitches for me to put a better ballgame together.”

Matsuzaka made two relief appearances for Boston before he was placed on the disabled list. Over a total of six innings, he allowed four hits and compiled a 3.00 ERA.

He felt the inning when Rochester loaded the bases wasn’t because he became tired.

“It wasn’t fatigue or anything like that,” he said. “It was more of a technical issue. I think I was trying to be a little bit too fine with those pitches.”

Matsuzaka was on an 80-to-85 pitch count and was surprised that he was removed before reaching that limit.

“I wasn’t thinking about pitch count, but when I came in after the fourth inning I was told I only had one more inning,” he said. “At that point, I thought to myself maybe I‘m getting up there in pitch count. But now that I heard what my pitch count was, I guess I could have gone out there for another inning.”

Boston pitching coach John Farrell said near the end of spring training that he would like to see Matsuzaka be able to throw 95 pitches before he would pitch in a major league game.

Matsuzaka expressed the opinion he could throw that many pitches now.

“I think even now, if it’s just about throwing 95 pitches, I could do it now,” he said. “Overall, I pitched better today than I thought I would be able to. I felt I was aggressive pitching in to left-handed batters. Overall, I had good feel for my pitches up high.

“I think after my next game is when I’ll have a better idea of how many more (rehab) games I need to pitch.”

Notes: Alan Embree, who’s trying to win a spot in Boston’s bullpen, pitched a one-hit sixth inning complete with two strikeouts … Dustin Richardson tossed a one-hit seventh for the save … Aaron Bates’ second-inning single plated Pawtucket’s lone run.