List of second-generation Major League Baseball players

Jack Doscher, son of Herm Doscher, became the first second-generation MLB player when he made his debut in 1903.

Ken Griffey Sr. and Ken Griffey Jr. became the first father-and-son combination to play in Major League Baseball at the same time, in 1989 when Ken Jr. was called up by the Seattle Mariners while Ken Sr. was playing with the Cincinnati Reds. They became Mariner teammates in 1990. In Ken Sr.'s first game as a Mariner, on August 31, 1990, the pair hit back-to-back singles in the first inning and both scored.[1] On September 14, in the top of the first off California Angels pitcher Kirk McCaskill, the pair hit back-to-back home runs, becoming the first and only father-son duo to ever accomplish such a feat.[2] The duo played a total of 51 games together before Ken Sr. retired in June 1991.

In 2001, Tim Raines and Tim Raines Jr. also played as teammates with the Baltimore Orioles.

Cecil and Prince Fielder are the only father-son combination each to hit 50 or more home runs in any season. Cecil Fielder hit 51 homers in 1990. Seventeen years later, his son, Prince, hit 50. Coincidentally, both Prince and Cecil hit exactly 319 home runs in their careers.

Five families have had a father and son serve as manager: the Macks (Connie and Earle), the Sislers (George and Dick), the Skinners (Bob and Joel), the Boones (Bob and Aaron), and the Bells, (Buddy and David).[3]

In 1992, Bret Boone became the first third-generation MLB player.

Altogether, there have been five third-generation MLB-player families:

• The Bells (Gus, Buddy, David, and Mike)
• The Boones (Ray, Bob, Bret, and Aaron)
• The Colemans (Joe, Joe Jr., and Casey)
• The Hairstons (Sammy, Jerry, Johnny, Jerry Jr., and Scott)
• The Schofield/Werths (Ducky Schofield, Dick Schofield, and Jayson Werth). Werth is the grandson of Ducky Schofield and nephew of Dick Schofield, and also the stepson of Dennis Werth.

There have been four third-generation families affiliated with MLB in roles other than player:

• The Runges (Ed, Paul, and Brian) are a third-generation family of MLB umpires.
• The Carays (Harry Caray, Skip Caray, and Chip Caray) are a third-generation family of MLB broadcasters
• The DeWitts (Bill DeWitt and brother Charlie DeWitt, GM and owners of St. Louis Browns; William DeWitt Jr., principal owner and managing partner of the St. Louis Cardinals; Bill DeWitt III, President of the St. Louis Cardinals) are a third-generation family of MLB executives.
• The Veecks (William Veeck Sr., president of the Chicago Cubs; Bill Veeck, owner of the Cleveland Indians, St. Louis Browns, and Chicago White Sox; Mike Veeck, owner of the independent minor-league St. Paul Saints) are a third-generation family of baseball executives.

In 2017, the Boone family was on the verge of becoming the first family to have produced four generations of players who reached the major leagues: Ray, Bob, Bob's sons, Aaron and Bret, and Bret's son, Jake, who was selected by the Washington Nationals in the 38th round of the 2017 MLB Draft.[4] However, Jake did not sign and is currently not a professional as he instead plays for Princeton University. Because he is attending college, he will not be eligible for the draft or to sign a professional contract until 2020.[4][5] More recently, the Bell family, consisting of Gus, Buddy, and Buddy's sons, David and Mike, is poised to become the first fourth-generation family. Mike's son, Luke, was selected by the Arizona Diamondbacks in the 34th round of the 2019 MLB Draft. Mike is currently the vice president of player development for the Diamondbacks.[6]

Whether any of the Boones or Bells see their great-grandson play in the majors, they will not represent the first great-grandfather/great-grandson combo in MLB history. In 1985, Bill Wilkinson made his big-league debut with the Seattle Mariners; his great-grandfather was Jim Bluejacket, who played for Brooklyn in the Federal League in 1914-15 and for the Cincinnati Reds in 1916.

The MacPhail family is the first family to have four generations affiliated with Major League Baseball in roles other than as players. Larry[7] was the general manager of the Reds and Dodgers as well as the president, general manager, and co-owner of the Yankees. Larry's son, Lee[8], was president and general manager of the Orioles, executive vice president and general manager of the Yankees, and president of the American League. Larry and Lee are also the only father and son pair to have been inducted into the Baseball Hall of Fame[9]. As an executive with the Reading Phillies of the Eastern League, until his untimely death at age 27 in an automobile accident in 1969, Lee MacPhail III secured the MacPhail family's baseball legacy as being the first to have had three generations of family members involved in baseball. Lee II's other son, Andy[10], is the current president of the Phillies and was previously general manager of the Twins, president and chief executive officer of the Cubs, and president of baseball operations for the Orioles. Lee MacPhail III's son, Lee MacPhail IV, has been the director of scouting for the Indians, Expos, Nationals, and Orioles. With Lee MacPhail IV's appointments, the MacPhail family's legacy extended to a fourth generation of family members involved in baseball.

• Baseball Almanac
• Major League Umpires All-time Roster. MLB.com