LOS ANGELES — On March 31, the third day of the 2018 regular season, the Boston Red Sox moved into first place in the American League East, a position they occupied almost exclusively from that point on. By May, it was clear they were the best team in baseball.

Now, after 119 wins between the regular season and playoffs, they remain unmatched.

And on Sunday, the Red Sox completed the seven-month marathon by cementing their status atop the sport and among the greatest teams of all time. Riding the left arm of David Price and the powerful swings of Steve Pearce, the Red Sox easily dispatched the Los Angeles Dodgers, 5-1, in Game 5 to cap a dominant season and claim the 2018 World Series title.

It is Boston’s first championship since 2013, and fourth in 15 seasons.

“This one, in my mind, was easily the best,” said John Henry, the Red Sox owner. He added: “They were just relentless throughout the season. It was their unity and sense of purpose. I’ve never seen anything like it.”

With the World Series trophy safely secured, there is a case to made that this team fits squarely among the best in history. Only one World Series-winning team — the 1998 Yankees, who won 125 games — won more games through the regular season and the playoffs.