Jeff Passan breaks down the Dodgers' acquisition of Mookie Betts, saying the deal makes them the heavy favorites to win the National League. (1:47)

The Boston Red Sox and Los Angeles Dodgers have agreed to a blockbuster deal that will send former MVP Mookie Betts and left-hander David Price to Los Angeles for a package that includes outfielder Alex Verdugo, sources tell ESPN.

The trade includes a third team, the Minnesota Twins, with the Dodgers sending starter Kenta Maeda to Minnesota, which in turn will ship hard-throwing pitching prospect Brusdar Graterol to Boston, sources said, confirming a report by The Athletic.

The deal is pending medical reviews.

With the bidding for Betts heating up between the Dodgers and the National League West rival San Diego Padres in recent days, Boston chose to deal with Los Angeles and improve the team that lost in the division series to the Washington Nationals, the eventual World Series champions.

The 27-year-old Betts is coming off a season in which he hit .295/.391/.524 and finished eighth in American League MVP voting. He won the 2018 MVP, hitting .346/.438/.640 during the Red Sox's championship-winning season.

Throughout the winter, Boston entertained offers for Betts, whose free-agent haul following the 2020 season could exceed $400 million. Betts will make $27 million this year. And as Boston tries to dip beneath the $208 million luxury-tax threshold, clearing its books of Betts and Price will go a long way toward reaching that goal. Price has three years and $96 million remaining on his contract.

Still, dealing Betts was far from a certainty for Boston, particularly after watching him develop from a fifth-round pick in 2011 and become one of the best players in baseball. In fewer than 5½ seasons with the Red Sox, Betts piled up 42.0 wins above replacement, according to Baseball-Reference.com.

The Dodgers coveted him, even knowing he could leave via free agency after one season. The Dodgers' depth allowed them to stomach the potential value given away and take comfort in the knowledge that they'll add Betts to a lineup that already includes reigning NL MVP Cody Bellinger, Justin Turner, Max Muncy and top prospect Gavin Lux.

play 1:34 Dodgers betting on Mookie to get them a World Series title Now that Mookie Betts is going to be a Dodger, Buster Olney questions whether Los Angeles has enough to win a championship.

For most of the winter, the Dodgers had been quiet, watching top free agents Gerrit Cole, Anthony Rendon and Stephen Strasburg sign elsewhere. Los Angeles' only free-agent signings this winter have been one-year deals for reliever Blake Treinen ($10 million) and starters Alex Wood ($4 million) and Jimmy Nelson ($1 million). San Diego looked to keep the Dodgers from making a big acquisition, hoping Boston would take one of its offers, which were centered around top catching prospect Luis Campusano and major league players. Boston preferred Los Angeles, as Chaim Bloom, the team's chief baseball officer, made his first big trade with Dodgers president Andrew Friedman, with whom he worked while running the Tampa Bay Rays.

Los Angeles, which hasn't won a championship since 1988, lost in back-to-back World Series against the Houston Astros and Red Sox. The 2017 Astros, who beat the Dodgers in seven games, cheated during that season by stealing signs and warning hitters what pitches were coming by banging on trash cans, according to a report from Major League Baseball. The 2018 Red Sox also are under investigation for using technology to steal signs.

Both the Astros and Red Sox fired their managers in the wake of the controversy, and Boston still has not named a manager, with pitchers and catchers reporting to spring training on Feb. 11.

Verdugo, 23, hit .294/.342/.475 with a 2.2 WAR in 377 plate appearances for the Dodgers last season. He took over in center field when A.J. Pollock was out.

Verdugo didn't play after Aug. 4 because of a back injury he re-aggravated while on a rehab assignment in September.

He is excellent against left-handed pitching and is under team control through the 2024 season. He will make the MLB minimum of $563,500 in 2020. He's also a member of the Mexican national team.

Graterol, a hard-throwing, 21-year-old right-hander, pitched 9⅔ innings last season in the majors, going 1-1 with a 4.66 ERA. In the minors last season, the Venezuelan was 7-0 with a 1.92 ERA across three levels. He was rated the No. 83 overall prospect for 2020 by MLB pipeline.

With news of the trade, the Dodgers' World Series odds went from 7-1 to 4-1 at Caesars Sportsbook, while their odds of winning the NL pennant went from +300 to +150 and their projected win total went from 99 to 100. The Red Sox's projected win total went from 87.5 to 86.5, while their World Series odds went from 20-1 to 25-1.