First baseman Vladimir Guerrero Jr. and the Toronto Blue Jays are in agreement on a 14-year, $500 million contract extension, pending a physical, sources told ESPN's Jeff Passan on Sunday night.

This is a monumental, no-deferral deal to keep the homegrown star in Toronto for the rest of his career, and comes as the 5-5 Blue Jays are in the midst of a road trip that takes them to Fenway Park to meet the Boston Red Sox on Monday.

Guerrero, 26, a four-time All-Star and son of Hall of Famer Vladimir Guerrero, had said he would not negotiate during the season after the sides failed to come to an agreement before he reported to spring training. But the sides continued talking and sealed a deal that is the third largest in Major League Baseball history, behind only Juan Soto's 15-year, $765 million contract with the New York Mets and Shohei Ohtani's 10-year, $700 million pact with the Los Angeles Dodgers.

The Blue Jays, snakebit in recent years by Soto and Ohtani signing elsewhere, received a long-term commitment from their best homegrown talent since Hall of Famer Roy Halladay.

They had tried to sign Guerrero to a long-term deal for years to no avail. Toronto got a glimpse of Guerrero's talent when he debuted shortly after his 20th birthday in 2019 and homered 15 times as a rookie. Guerrero's breakout season came in 2021, when he finished second to Aaron Judge in American League MVP voting after hitting .311/.401/.601 with 48 home runs and 111 RBIs.

Guerrero followed with a pair of solid-but-below-expectations seasons in 2022 and 2023, and in mid-May 2024, he sported an OPS under .750 as the Blue Jays struggled en route to an eventual last-place finish. Over his last 116 games in 2024, the Guerrero of 2021 reemerged, as he hit .343/.407/.604 with 26 home runs and 84 RBIs.

With a payroll expected to exceed the luxury tax threshold of $241 million, the Blue Jays ended the season's first week atop the American League East standings. Toronto dropped to 5-3 on Friday after a loss to the Mets, in which Guerrero collected a pair of singles, raising his season slash line to .267/.343/.367.

Between Guerrero and shortstop Bo Bichette's free agency after the 2025 season, the Blue Jays faced a potential reckoning. Though Bichette is expected to play out the season before hitting the open market, Guerrero's deal lessens the sting of Toronto's pursuits of Ohtani in 2023 and Soto in 2024.

Toronto shook off the signings of Soto and first baseman Pete Alonso with the Mets, left-hander Max Fried with the New York Yankees and infielder Alex Bregman with the Boston Red Sox to retool its roster. Toronto gave outfielder Anthony Santander a heavily deferred five-year, $92.5 million contract, brought in future Hall of Famer Max Scherzer on a one-year, $15.5 million deal, bolstered its bullpen with right-handers Jeff Hoffman and Yimi Garcia, and traded for Platinum Glove-winning second baseman Andres Gimenez, who is hitting cleanup.

Toronto's long-term commitments will allow for significant financial flexibility. In addition to Bichette and Scherzer, right-hander Chris Bassitt and relievers Chad Green and Erik Swanson are free agents after this season. After 2026, the nine-figure deals of outfielder George Springer and right-hander Kevin Gausman also come off the books.

Building around Guerrero is a good place to start. One of only a dozen players in MLB with at least two seasons of six or more wins above replacement since 2021, Guerrero consistently is near the top of MLB leaderboards in hardest-hit balls, a metric that typically translates to great success.

Like his father, who hit 449 home runs and batted .318 over a 16-year career, Guerrero has rare bat-to-ball skills, particularly for a player with top-of-the-scale power. In his six MLB seasons, Guerrero has hit .288/.363/.499 with 160 home runs, 510 RBIs and 559 strikeouts against 353 walks.

Originally a third baseman, Guerrero shifted to first base during the pandemic-shortened 2020 season. Had the Blue Jays signed Alonso, they signaled the possibility of Guerrero returning full time to third, where he played a dozen games last year.

With the extension in place, the 6-foot-2, 245-pound Guerrero is expected to remain at first base and reset a market that had been topped by the eight-year, $248 million extension Miguel Cabrera signed just shy of his 31st birthday in 2014.