OTTAWA — The eyes of Red Sox Nation were trained on Jon Lester last night, and he didn’t disappoint.

Indeed, the prized young left-handed Sox pitching prospect, who is continuing his stirring comeback from lymphoma, was sensational in his rehab outing with the PawSox.

But he wasn’t the only one.

Lester combined with three PawSox relievers to toss a one-hitter at the Ottawa Lynx, blanking them 4-0, before 1,640 at Lynx Stadium.

Operating under a strict pitch count, Lester, whose last rehab outing on May 2 was short-circuited by arm cramps, was scintillating in his 3 2/3 innings of work.

Better yet, he said he felt no ill-effects of the arm yips or the 17 days of rust. Most important, the cancer concerns that surfaced last August are a thing of the past.

“I felt fine,” he said. “Healthy, that’s the main thing. No problems with the forearm or anything like that. It was just positive.”

Lester threw 48 pitches, 29 for strikes, and retired 11 of the 13 Lynx he faced.

He allowed Ottawa two of its only four base runners, including a one-out double in the first, which was the Lynx only hit. He walked the next hitter, former PawSox Lou Collier, then silenced the last 10 hitters before giving way to reliever Travis Hughes (3-1).

Leaving his cut fastball in the clubhouse, Lester used the rest of repertoire — curveball and changeup — to great effect.

“I just pitched,” he said. “I’ll just have to learn to pitch without the cutter for a while. It worked out tonight.”

Said Pawtucket catcher George Kottaras, “He looked great. His mechanics were great. He was making good pitches when he needed to. He knows himself well enough to figure things out. He did a great job.”

Lester, who is on his second 30 day rehab assignment, will stay in the PawSox rotation for the near future while he builds up his pitch count.

“As far as I know,” he said, “I’ve got another start with these guys in another five days. We’ll see what happens.”

Hughes picked up where Lester left off and took the game through the seventh inning, and was virtually flawless, allowing just one runner, who was then erased on a double play.

By then, the PawSox had all the runs they would need. Their first two were scored by Jacoby Ellsbury (3-for-5) who came within a home run of hitting for the cycle.

Ellsbury singled in the first, stole second, then was doubled in by David Murphy.

He then legged out a triple in the third and scored when Joe McEwing reached on an infield error to make it 2-0.

Newcomer Michael Tucker added a two-run double in the sixth.

“I don’t think you could script it better than it was tonight,” said PawSox skipper Ron Johnson, whose club has won five of its last six starts. “It was clean.”

Craig Hansen and Bryan Corey pitched an inning each to mop up.

AROUND THE BASES: Ottawa veteran outfielder Ron Calloway announced his retirement prior to the weekend. Calloway enjoyed a solid 11-year career, including a stint last year with Pawtucket, when he hit .288 with 4 homers and 49 RBI. “He was one of the ultimate gentlemen of the game,” said Johnson. Calloway also logged big-league time with the Montreal Expos. … The one-hitter was the first recorded by PawSox pitching since June 6, 2005, when the trio of Abe Alvarez, Scott Cassidy, and Cla Meredith turned the trick against Richmond.