To watch Roenis Elias efficiently dismantle the Detroit Tigers was to watch the development of a young pitcher.

Elias was close to untouchable against the Tigers. He pitched the first shutout of his career — and the first by a Mariners rookie since Freddy Garcia in 1999 — in Seattle’s 4-0 win Sunday. But it was more than just the results.

Elias baffled the Tigers in large part because his changeup was so effective.

“I thought his changeup was the equalizer,” Mariners manager Lloyd McClendon said.

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Elias was primarily a fastball and curveball pitcher early in his career. But he realized that most of baseball’s successful pitchers had a changeup in their arsenal and decided he needed one, too.

He only started throwing a changeup a year ago, and he struggled to control it then. But against one of the best lineups in baseball, the 25-year-old Elias turned to his changeup again and again. And Detroit never could get a good read on it.

McClendon called the pitch “exceptional.” Catcher Mike Zunino said it was the best he has seen Elias throw his changeup. Elias agreed.

Elias throws his changeup with the same grip as Mariners ace Felix Hernandez, who has given Elias pointers with the pitch.

“Felix has refined it,” Elias said.

The Tigers barely even dinged Elias. He gave up just three hits. He didn’t give up any hits to Detroit’s three best hitters: Ian Kinsler, Victor Martinez and Miguel Cabrera, one of the best hitters in the world.

Elias never allowed a runner to reach second base. He stumped the Tigers by locating his pitches, which he has struggled with at times. The stuff has always been there. That has been clear from his first major-league starts this season.

But Elias did two things he hasn’t always done in his brief career. He was efficient and threw all three of his pitches for strikes. The Tigers couldn’t sit on any one pitch. They had to be ready for all three.

“His stuff is as good as any lefty in the league,” McClendon said. “He’s got quality, quality stuff. If he throws strikes, he’s usually going to be around late in the ballgame.”

Elias had thrown 101 pitches through eight innings, and McClendon didn’t hesitate to send him back onto the mound to face Kinsler, Cabrera and Martinez in the ninth.

“He tells me all the time, ‘I want to pitch. I want to stay in there,’ ” McClendon said. “I said, ‘Well, then, pitch better.’ Today he pitched better and stayed in. Great outing.”

Elias mowed down Kinsler, Cabrera and Martinez for his sixth three-up, three-down inning. He received the ball as he walked off the field and held it in front of his locker after the game.

He said it was only the second complete game he has thrown as a pro.

The Mariners gave Elias help in the form of timely hitting. Facing Cy Young Award winner Max Scherzer, the Mariners managed four runs.

Michael Saunders drove in a run with a double in the first inning. Willie Bloomquist and James Jones added runs batted in in the fifth inning. And Brad Miller snapped a home-run drought that spanned more than a month by hitting a solo homer in the seventh.

All those runs came off Scherzer.

“We did a nice job of really making him work,” McClendon said.

Absolute zero

Roenis Elias is the first M’s pitcher in nearly a year to throw a shutout. Here are the three over the past two seasons:

Date Pitcher Result
June 1, 2014 Roenis Elias vs. Detroit 4-0
June 11, 2013 Aaron Harang vs. San Diego 9-0
May 27, 2013 Aaron Harang vs. Houston 4-0

Jayson Jenks: 206-464-8277 or