In his shockingly brief Major League Baseball career, Toronto Blue Jays pitcher Trey Yesavage has shown that when he doesn’t have his best stuff, he’s still pretty good.

And when he does have his best stuff? He’s like a demi-god throwing thunderbolts toward the plate.

The latter version took the mound at Dodger Stadium on Wednesday night, and the 22-year-old rookie delivered seven electric innings that were, at once, an iconic moment in Blue Jays history and one of the best pitching performances ever in the World Series.

He’s so new to the Jays that no one has even given him a nickname. Here’s one suggestion: The Treyminator.

Yesavage struck out 12 Los Angeles Dodgers — a lineup with multiple future Hall of Famers — and gave up just three hits, two of them infield singles.

He also didn’t walk anyone, becoming the first pitcher in World Series history to have 12 strikeouts and zero walks in a game.

It was, incredibly, just his eighth major-league start in a season that began in low-A ball in Dunedin.

It was his fifth playoff start; no player has ever made that many postseason appearances after playing in just three regular-season games.

The dazzling performance from the kid was the signature part of Toronto’s 6-1 Game 5 victory over Los Angeles, which leaves the Blue Jays just one win away from a championship.

But it was also indicative of the team’s vibe.

The Blue Jays have a few stars, but they also have a big mess of scrappy underdog types, the kind of guys that manager John Schneider lovingly refers to as “ballplayers.”

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The ballplayers were at it again in Game 5. Davis Schneider, inserted into the lineup and the leadoff spot, as George Springer was unable to return from injury, smashed the first pitch he saw from Dodgers starter Blake Snell over the left-field fence for a home run.

Addison Barger had two hits and made a spectacular diving catch in right field. Isiah Kiner-Falefa had an RBI single. Andres Gimenez had a key walk and scored a run.

Amid all that, Vladimir Guerrero, Jr., also followed Schneider’s home run with a solo blast of his own, which, per Sportsnet, came on his hardest swing of the entire season.

It was a very Blue Jays performance in a playoff run that has become defined by the team’s scrappier side.

They don’t rely on superstars — with the notable exception of Guerrero— but the offence, despite a few lapses, has been ruthless.

Through five games, Toronto has outscored Los Angeles 29-18 and outhit them by a 53-37 count. Since suffering that crushing, 18-inning loss in Game 3, the Jays have outscored the Dodgers 12-3.

A defeat that should have drained their confidence was instead a springboard to a pair of resilient wins. Has anyone told the Maple Leafs this is possible?

The World Series had a David-and-Goliath narrative before the Jays had even qualified, with the defending champion Dodgers and their star-laden roster waiting for them.

The disparity was perfectly illustrated by the matchup that pitted Yesavage up against Snell on the mound.

Snell, a two-time Cy Young Award winner, was signed as a free agent last winter to a US$182-million contract, largely for his big-game experience. Yesavage didn’t arrive in the majors until September, and because his entry-level contract is prorated, he’s making about US$57,000 this season.

The two battled to something of a draw in Game 1 before the Jays feasted on the Dodgers’ bullpen to blow that game open.

But in Game 5, it was a mismatch in Yesavage’s favour.

With his split-fingered fastball and his slider both working, Yesavage had Los Angeles hitters flailing all night.

He struck out every Dodger batter at least once. Of the 30 split-fingered fastballs he threw, the Dodgers didn’t even make contact with half of them.

It was absurd stuff. Almost cruel. He wasn’t just dealing with All-Stars like Shohei Ohtani, Mookie Betts and Freddie Freeman; he was making them look foolish.

Davis Schneider, speaking to Sportsnet after the game, marvelled at the performance of the rookie who spent his season rising through the Jays’ minor-league system, from Dunedin to Vancouver to New Hampshire to Buffalo.

Yesavage had only just arrived, Schneider said, but “it’s like he’s been here 15 years.”

“He’s already one of the best pitchers in the game, I think,” Schneider said. “I haven’t faced him, but the way people take swings off him, it looks like they’ve never seen a pitcher before in their lives. He’s a dog, for sure.”

That dog has put the Blue Jays on the cusp of a World Series championship.

And the team that has been doubted all season is no longer the underdog.

After the Jays beat the Seattle Mariners in American League Championship Series, Guerrero stood on the Rogers Centre turf and said they still needed to finish the job.

“Four more,” he said, meaning the number of wins that were still needed.

And now, it’s down to just one.