Vladimir Guerrero Jr. has been one of the biggest stories of the 2025 MLB postseason. The 26-year-old helped lead the Toronto Blue Jays to an American League Division Series win over the New York Yankees this week. Guerrero Jr. went 9-for-17 (.529) in the four-game series victory with three home runs and nine RBIs, including a Game 2 grand slam.

With his solo shot in Game 1, he joined an exclusive club alongside his father, Vladimir Guerrero Sr., and five other father-son duos to hit a home run in the playoffs. The Guerreros are the only pair to both hit a grand slam in postseason play, with the elder Guerrero launching a one in the 2004 ALDS for the Anaheim Angels.

The younger Guerrero’s strong postseason has attracted attention to the question: Who are some of the best father-son duos in MLB history?

Ken Griffey Sr. and Ken Griffey Jr.

This duo became the first father and son to appear in the lineup for the same team. They were teammates in 1990 and 1991 with the Seattle Mariners, playing 51 games together in Griffey Jr.’s second and third MLB seasons. Junior’s resume is well-established, with 13 All-Star nods, 10 Gold Gloves, seven Silver Slugger awards and the 1997 AL MVP award. He was inducted into the Baseball Hall of Fame in 2016, named on a then-record 99.3 percent of ballots.

Griffey Sr.’s career spanned 19 seasons, from 1973 to 1991. He was teammates on the Cincinnati Reds alongside the likes of Pete Rose and Joe Morgan, winning the World Series in 1975 and 1976 with the “Big Red Machine.” A three-time All-Star, Griffey Sr. is a member of the Reds Hall of Fame.

Vladimir Guerrero Sr. and Vladimir Guerrero Jr.

Vladimir Guerrero Sr. is the only father on this list who has been voted into the Hall of Fame. He posted a .318 average with 449 home runs, eight Silver Slugger awards and the 2004 AL MVP.

Vladimir Guerrero Sr. spent six seasons of his Hall of Fame career with the Angels. Like his son, his first MLB team was based in Canada — the Montreal Expos. (Stephen Dunn / Getty Images)

Already a five-time All-Star and two-time Silver Slugger, Guerrero Jr. would appear to be in the prime of his career and have further upside.

Bobby Bonds and Barry Bonds

It’s hard to argue that these two aren’t the best father-son duo in MLB history. They hold the record for most RBIs, home runs and stolen bases as a father-son grouping. Barry’s 762 homers and 1,996 RBIs play a big role in that. A seven-time MVP winner and 14-time All-Star, his mark on the game is unquestionable. Of course, Barry’s PED history makes the duo’s status controversial.

Bobby’s career is often overshadowed. The elder Bonds hit 332 home runs and had 1,024 RBIs, playing when long balls were much harder to come by. Bobby played 14 seasons for eight organizations, sharing the field with Hall of Famers such as Willie Mays and Willie McCovey.

Sandy Alomar Sr., Roberto Alomar, Sandy Alomar Jr.

The Alomar family has made its mark in MLB for decades, on the field and in the dugout. After growing up in Puerto Rico, Alomar Sr. had a 15-year playing career in the 1960s and 1970s, followed by 24 seasons of coaching.

His sons, Roberto and Sandy Jr., carved out big-league careers of their own. Roberto is considered one of the best second basemen of all time, joining Cooperstown in 2011 with 90 percent of the vote. A 12-time All-Star, he has the most Gold Gloves by a second baseman (10) and won the World Series with the Blue Jays in 1992 and 1993.

Sandy Jr. played 20 seasons as a catcher, making six All-Star teams and being inducted into Cleveland’s Hall of Fame. He has also been an assistant coach for the Guardians organization since 2010. This trio’s longevity earns them an appearance on this list.