Champions of the Class B Florida International League with a 101-49 record, it’s been said that their biggest fan was a young Fidel Castro.

Founded in 1939, this legendary team is still active in the Puerto Rico Winter League, now known as Liga de Béisbol Profesional Roberto Clemente. The league’s name honors the memory of Roberto Clemente, a native of Puerto Rico who played for Santurce and forged a Hall of Fame career with the Pittsburgh Pirates.

The Rockets played in the Class C Longhorn League. Joe Bauman won the Triple Crown in 1954 with an eye-popping 72 home runs, a .400 batting average and 224 runs driven in. His home run record stood as the most ever hit by a professional player until Barry Bonds swatted 73 in 2001.

The 1957 Braves, in their fifth season in Milwaukee after relocating from Boston, beat the New York Yankees in the World Series. Warren Spahn, arguably the greatest left-hander in history, went 21-11 with a 2.69 ERA for the ’57 Braves.

Professional baseball came to Hawaii in 1961 when the Sacramento Solons of the Pacific Coast League relocated to Honolulu. Carlos Bernier led the PCL in hitting in ’61 with a .351 average. Bernier, who played one season in the big leagues with Pittsburgh in 1953, is in the Pacific Coast League Hall of Fame.

The uniform is an actual hand-me-down from the 1960 Washington Senators of the American League and was worn by outfielder Dan Dobbek, whose name is stitched inside the shirt. Dobbek appeared in 110 games for the 1960 Senators during the parts of three seasons he played in the big leagues. When the Senators relocated to Minneapolis after the 1960 season and were reborn as the Minnesota Twins, their old road uniforms were passed on to the Middleboro Senators, a farm team for the expansion Washington Senators that replaced the old Senators in 1961.

Hall of Fame lefty Sandy Koufax went 25–5 with 306 strikeouts and a 1.88 ERA for the pennant-winning 1963 Dodgers. He won both the Cy Young and MVP awards, and was voted World Series MVP after submitting two complete-game victories in the Dodgers’ four-game sweep of the New York Yankees in the Fall Classic.

One of the better-known teams from the famed Alaska Summer League, the Goldpanners are based in Fairbanks. Among the future major-leaguers who played for the Goldpanners are Hall of Famer Tom Seaver and former Red Sox lefty Bill Lee.

Lefty Steve Carlton won 329 games and registered 4,136 strikeouts during his Hall of Fame career. The ’67 Cardinals defeated the “Impossible Dream” Red Sox in the World Series.

Henry Aaron — Hammerin’ Hank — signed his first professional contract with the Boston Braves, but it was with the Milwaukee Braves he made his major-league debut in 1954. He later moved with the Braves when the team relocated to Atlanta and then returned to Milwaukee to close out his brilliant career with the Brewers. Along the way Aaron hit 755 career home runs, surpassing Babe Ruth’s old record of 714 when he hit No. 715 off Al Downing of the Los Angeles Dodgers on April 8, 1974.

When former Chicago Cub and longtime scout Lennie Merullo was invited back to Wrigley Field in 1969 to participate in an oldtimers game, this is the uniform he was given— even though he never actually wore No. 3 for the Cubs.. A No. 21 uniform was provided for him in 1999 when he joined our Oldtime Baseball Game as a coach (See: 1941 Chicago Cubs), but he chose to wear his No. 3 uniform. He continued to wear the No. 3 uniform in the Oldtime Baseball Game every year from 1999 through 2009.

Hall of Fame shortstop Luis Aparicio played 10 of his 18 seasons with the Chicago White Sox, winding up his career in Boston. He led the American League in stolen bases in each of his first nine seasons.

The 1969 Miracle Mets shocked the Baltimore Orioles in the World Series for the their first championship. Hall of Famer Tom Seaver, who won 25 games for the ’69 Mets, closed out his career with the Red Sox in 1986.

The expansion Seattle Pilots played only one season, relocating to Milwaukee in 1970 and becoming the Brewers. Tommy Harper, who stole a whopping 73 bases for the Pilots in 1969, went on to play and coach for the Red Sox. He settled in the Boston area after retiring.

This is an actual road uniform worn in the big leagues by Newton, Mass., native Jim Corsi, who pitched for his hometown Red Sox from 1997 to 1999. Corsi pitched 10 seasons in the big leagues and was a member of the 1989 World Series champion Oakland A’s. After his career ended, Corsi became the first former Red Sox player to play in the Oldtime Baseball Game, making appearances in 2002 and ’03.

The original Boston Giants were an early Negro Leagues baseball team founded at the turn of the century as the Dartmouth Athletic Giants. Mostly a semipro team that served as a sort of minor-league team for better-known Negro Leagues teams elsewhere in the country, several incarnations came and went from the 1920’s to the 1940’s. They were variously known as the Boston Royal Giants and Boston Colored Giants and played home games at such venues as Carter Field and Lincoln Park in the South End, at Dorchester’s Town Field and, in Cambridge, Russell Field and Hoyt Field.

On March 3, 2015, the Red Sox and Boston College played an exhibition game at JetBlue Park in Fort Myers, Fla., in honor of Pete Frates, the former BC baseball captain who was battling ALS. What made this game special is that players on both teams wore No. 3 jerseys, after which they were auctioned off to benefit ALS research.

The House of David was a barnstorming team that toured the country from the 1920’s to the 1950’s. House of David players were known for their long beards. Though they mostly were amateur players, future Hall of Famers Grover Cleveland Alexander and Satchel Paige had hitches with the House of David, as did Eddie Popowski, who would later be the third-base coach of the 1967 “Impossible Dream” Red Sox.