Los Angeles Dodgers star Mookie Betts has set his sights on winning World Series championships after his blockbuster 12-year contract extension.

Betts – the 2018 American League MVP – will remain with the Dodgers through the 2032 MLB season in a deal reportedly worth $365million.

Betts – acquired by the Dodgers from the Boston Red Sox in February as the centrepiece of a blockbuster trade that also sent pitcher David Price to Los Angeles – was set to enter free agency at the conclusion of the upcoming season.

The four-time Gold Glove winner and four-time All-Star is now eyeing MLB glory, having helped the Red Sox claim the World Series two years ago.

"I just love being here,'' Betts said in a videoconference call following Wednesday's announcement, on the eve of the team's opener against the San Francisco Giants on Thursday.

"I love everything about here. I'm here to win some rings and bring championships back to LA. That's all I'm focused on.

"This is what I've been working for my whole life. I know the Dodgers are going to be good for a long time. I love being here, everything about being here.

"The people here made me feel so comfortable. Everybody's amazing. This organisation is a well-oiled machine. I love it."

Dodgers president of baseball operations Andrew Friedman added: "When we made the trade, we did it with more than 2020 in mind. We appreciate the risk that came with that and did go into it with our eyes wide open.

"We traded a lot of talent away, we got a lot of talent back. Now we're going to kind of keep the band together for a while, that was front of mind for us."

"When you're making an investment of this magnitude, you're not just betting on ability, you’re also betting on the person," Friedman said. "We couldn't be more comfortable to make that bet than on Mookie.

"Mookie can impact a game at every facet. But what really stood out to us is the work ethic, the burning desire to get better on a daily basis. That tone is set for young players now and will come up in the future and will leave an indelible mark on the organisation."