[4] A number of famous horses raced at Suffolk Downs, including Seabiscuit, Whirlaway, Funny Cide, and Cigar.

Richard Danielson, Charles Adams, Bruce Wetmore, and John R. Macomber were also members of the track's first board of directors.

[13] Although Adams stated that he decided to give up the position to focus on his other interests, he would later say that Connors was elected at the behest of Governor Charles F.

[14] In 1939, Connors resigned as Suffolk Downs president amid allegations that he, his brother-in-law (State Racing Commissioner Thomas R. Foley), and Outdoor Amusements, Inc. (a company applying for a license to open a track in Westport, Massachusetts) attempted to gain control of horse racing in eastern Massachusetts.

The winner's purse of $51,780 was the largest of Seabiscuit's career up to that point and would only be surpassed by his final victory, the 1940 Santa Anita Handicap.

[11] On February 20, 1944, the Aldred Investment Trust purchased a majority of the voting stock in the Eastern Racing Association.

[23] On May 1, 1946, a consortium, led by Boston businessman John C. Pappas, acquired control of Suffolk Downs at a Federal Court-directed public auction.

Pappas' $3.6 million bid exceeded offers made by Joseph F. Timilty, Henry Simberg (represented at the auction by Paul A. Dever), and Bay Meadows Racetrack general manager Bill Kyne.

[11] In 1968, the track was sold to Reality Equities Corporation who brought on former baseball team owner Bill Veeck as president.

[30] During Veeck's tenure as president, Suffolk Downs hosted a number of promotions including chariot races, livestock giveaways and mock Indian battles.

[18] On February 14, 1976, the inbound platform of the Suffolk Downs MBTA station was destroyed by fire, which hurt track attendance.

In January 1988, the state Legislature gave LeRoux the concessions he asked for, which allowed racing to continue through the 1989 season.

[11][18] In May 1991, Sterling Suffolk Racecourse LLC., headed by James B. Moseley and John L. Hall II, leased the track from Belle Isle for $8.5 million.

The track underwent further renovations in 1993, including a new AmTote Spectrum 2000 mutuel system, a newly constructed Clubhouse video lounge, a tribute to MassCap winners in the Grandstand, and a new racing strip.

In 1995, the track saw the opening of a redesigned Legends Bar & Grill, improvements to the lighting, upgrades to the backstretch and racetrack, and a remodeled paddock and winner's circle.

[33] On April 9, 1998, James B. Moseley, Suffolk Downs' Chairman of the Board and the man credited with reopening the track, died at the age of 66.

[citation needed] On June 8, 1998, Suffolk Downs hosted Eddie Andelman's Hot Dog Safari to benefit the Joey Fund/Cystic Fibrosis Foundation.

[18] On June 19, 1999, Suffolk Downs held its first concert in decades when it hosted the Guinness Fleadh music festival.

Thirty acts performed during twelve-hour festival, including Elvis Costello, Hootie and the Blowfish, and John Lee Hooker.

The track's owners partnered with Caesars Entertainment Corporation on a plan to build a $1 billion resort casino on the site.

The track partnered with Mohegan Sun on a project entirely located in Revere, Massachusetts, where Suffolk Downs has 53 acres of property.

[41] Limited live racing returned in 2015 and on June 9, 2016, the Massachusetts Gaming Commission approved funding for the track to run on 6 days in 2016.

[42] In March 2017, the track's owners agreed to sell it to HYM Investment Group, a Boston real estate developer.

The last horse to cross the finish line in the final live race at Suffolk Downs was Colonial Front on June 30, 2019.

In June 2023, a performance venue known as The Stage at Suffolk Downs opened inside the racetrack with a capacity of 8,500 people.