Last Updated: June 17th, 2026 by Michael Schatz
Baseball trades can make or break franchises, turning contenders into dynasties or reducing powerhouses to rubble. As we look back through MLB history, certain deals stand out as particularly lopsided—watershed moments that changed the course of America’s pastime. Here are the 10 most jaw-dropping, head-scratching trades that left one team counting their blessings and the other counting their losses.
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The Bambino Betrayal: Red Sox Sell Babe Ruth to Yankees (1919)
The trade that launched the “Curse of the Bambino” saw Red Sox owner Harry Frazee sell Babe Ruth to the Yankees for $100,000 (roughly $1.5 million today) and a $300,000 loan. Ruth had just set a single-season home run record with 29 in 1919. The Yankees would win 26 World Series titles in the following decades, while the Red Sox waited 86 years for their next championship. Talk about a deal with the devil.
Bagwell’s Boston Goodbye: Future Hall of Famer for a Reliever (1990)
The Red Sox, in desperate need of bullpen help for their playoff push, traded minor league third baseman Jeff Bagwell to the Astros for reliever Larry Andersen. Andersen pitched 22 innings for Boston before leaving as a free agent. Bagwell became a Hall of Famer with 449 home runs, 2,314 hits, and an MVP award. The trade remains a cautionary tale about sacrificing young talent for short-term gains.
Lou Brock Highway Robbery: Cubs’ Colossal Cardinals Gift (1964)
The Cubs sent 25-year-old Lou Brock to the Cardinals for pitcher Ernie Broglio in what became one of baseball’s most infamous trades. Brock went on to steal 888 bases for St. Louis, make six All-Star teams, and enter the Hall of Fame. Broglio, battling arm troubles, won just seven games for the Cubs before retiring. The trade helped launch the Cardinals’ dynasty of the 1960s.
The Miguel Cabrera Mega-Mistake: Marlins’ Fire Sale to Tigers (2007)
The Marlins traded Miguel Cabrera and Dontrelle Willis to Detroit for six players, including Cameron Maybin and Andrew Miller. Cabrera became one of baseball’s greatest hitters, winning two MVPs and the Triple Crown with Detroit. None of the players Miami received made significant impacts. Cabrera went on to amass over 3,000 hits and 500 home runs, cementing his legacy as one of the greatest right-handed hitters ever.
Nolan Ryan’s Mets Exit: Angels Strike Gold (1971)
The Mets traded the wild but promising Nolan Ryan along with three prospects to the Angels for Jim Fregosi. Ryan transformed into the most dominant power pitcher in history, throwing four no-hitters for California while setting strikeout records. Fregosi played just 146 games for the Mets before being traded. Ryan went on to record 324 wins and 5,714 strikeouts in his Hall of Fame career.
Frank Robinson’s Revenge: Reds’ ‘Old 30’ Becomes Orioles Legend (1965)
The Reds traded Frank Robinson to the Orioles for Milt Pappas, Jack Baldschun, and Dick Simpson, with Cincinnati’s owner calling Robinson “an old 30.” Robinson immediately won the Triple Crown and MVP in 1966, leading Baltimore to their first World Series title. He hit 179 home runs in six years with the Orioles, while none of the players Cincinnati received made lasting impacts.
Pedro Martinez to Montreal: Dodgers’ DeShields Disaster (1993)
The Dodgers traded Pedro Martinez to the Expos for second baseman Delino DeShields, concerned about Martinez’s size and durability. Martinez blossomed into one of the most dominant pitchers ever, winning his first Cy Young Award with Montreal. DeShields hit .241 in three unremarkable seasons with Los Angeles while Pedro became a Hall of Famer with three Cy Youngs.
John Smoltz for Doyle Alexander: Tigers’ Short-Term Pain (1987)
The Tigers traded prospect John Smoltz to Atlanta for veteran Doyle Alexander during their 1987 playoff push. Alexander went 9-0 down the stretch, helping Detroit win the division. However, Smoltz developed into a Hall of Fame pitcher, winning 210 games and striking out 3,084 batters during a legendary career with the Braves’ dynasty teams.
The Randy Johnson Blunder: Mariners Fleece Expos (1989)
The Expos traded Randy Johnson, Gene Harris, and Brian Holman to Seattle for Mark Langston and Mike Campbell. Langston left Montreal after just one season, while Johnson developed into “The Big Unit” – one of the most intimidating pitchers ever. He won 130 games and a Cy Young Award with Seattle, starting his journey to 303 wins and 4,875 strikeouts.
Sandberg’s Switch: Phillies Hand Cubs a Dynasty Piece (1982)
The Phillies traded Ryne Sandberg and Larry Bowa to the Cubs for Ivan DeJesus. Sandberg, considered a throw-in at the time, became a 10-time All-Star and Hall of Famer. He won nine Gold Gloves, seven Silver Sluggers, and the 1984 NL MVP award. DeJesus lasted just three seasons in Philadelphia while Sandberg became Mr. Cub of his era.