Perhaps if Scott Diamond’s 2013 debut hadn’t been delayed by the discovery of a bone chip in his elbow in December, he would have been ready to start on Opening Day, not April 13. And maybe he would have been allowed a shot at a complete-game shutout.

After his sparkling performance on Tuesday, the Twins at least can look forward to his outings in the near future. Because Diamond (3-2) is giving them reasons to believe that more is coming.

Behind Diamond’s pitching and a couple of big hits by batterymate Ryan Doumit, the Twins rolled to a 6-1 victory over the Red Sox at Fenway Park.

He was efficient. He was crafty. He was hard to hit. Diamond held Boston to three hits over seven shutout innings with no walks and two strikeouts. Stephen Drew’s single to lead off the third inning was Boston’s last hit off Diamond as he retired 15 straight and 17 of 18 to punctuate his outing.

He threw 96 pitches through seven innings, and the Twins didn’t risk an eighth as Josh Roenicke came in from the bullpen.

After giving up four earned runs over his 4⅓ innings in his season debut on April 13, Diamond has reeled off four straight quality starts (at least six innings, giving up no more than three earned runs). And Tuesday was his best of the bunch.

With a large strike zone to work with — St. Paul’s own Jeff Nelson was behind the plate on Tuesday — Diamond and Red Sox righthander Dempster took advantage.

Diamond used all his pitches early but was fastball-intensive the second time through the Red Sox lineup. Eighteen of his 24 pitches in the third and fourth innings were fastballs. Then Diamond tried to stay a step ahead. In the fifth, Diamond threw a slider for strike one to Jonny Gomes, who eventually flied out to left. Diamond dropped a curveball over for strike one to Will Middlebrooks, who eventually grounded out to second. Another slider for strike one was thrown to Stephen Drew, That at-bat ended with a groundout to first.

Diamond seemed to be one step ahead for most of his outing — which a finesse lefty must be. Given that Diamond was pitching for the first time in one of baseball’s grand stages in historic Fenway Park made it all the more impressive.