The constant refrain from November through March went like this: “The Red Sox will go as far as Clay Buchholz and Jon Lester take them.”

With April officially in the books and May off to a smashing start, the Red Sox could hardly have hoped for better.

Buchholz dominated the reeling Blue Jays tonight, shutting them out for seven innings on two hits with eight strikeouts in a 10-1 victory. Mike Napoli paced an offensive assault that included five homers with his first two-homer game in a Red Sox uniform.

But the night really belonged to Buchholz, who only further proved the truth in that offseason refrain.

While Lester may have ended April on a down note with a no-decision in Tuesday’s 9-7 loss here, it hardly detracted from a stellar opening month that saw him go 4-0 with a 3.11 ERA.

“Looking back at (Tuesday) night, I would’ve wanted that one to go a little better, but all in all, as a collective whole, yeah, it went pretty well,” Lester said before the game. “There are a couple of starts in there where I wish I had saved a couple of pitches, but it’s been good overall.”