Mario Guerrero, a Dominican shortstop who spent eight seasons in Major League Baseball, died on July 2, 2023, in his hometown of Santo Domingo.
Early Life and Family
Born on September 28, 1949, Guerrero was the younger brother of celebrated scout Epy Guerrero, whose keen eye helped sign dozens of future big leaguers.
Signing and Minor‑League Development
Guerrero entered professional baseball after signing with the New York Yankees as an amateur free agent on April 27, 1968, and spent time in the minor leagues at Fort Lauderdale and Kinston before earning a spring‑training invitation.
MLB Debut and Record‑Setting Game
He made his MLB debut with the Boston Red Sox on April 8, 1973, and on June 2 that year tied a league record for shortstops by turning five double plays in a single game.
Career Trajectory and Peak Season
After trades to the St. Louis Cardinals in 1975 and to the California Angels in 1976, Guerrero found a resurgence with the Oakland Athletics in 1978, batting .275 with three home runs and 38 RBI, his most productive season.
A subsequent trade sent him to the San Francisco Giants, but he never appeared for them; instead he was dealt to the Athletics, where he contributed before being released by the Seattle Mariners in 1981, ending his top‑level playing career.
Post‑Playing Life and Legal Battles
Off the field, Guerrero transitioned to representing players as an agent and teaching the game, often collaborating with his brother Epy, and he later became involved in a high‑profile lawsuit against former teammate Raúl Mondesi over unpaid commissions.
Legacy
His career path reflects a bridge between the Dominican talent pipeline and the broader MLB landscape, a legacy underscored by the achievements of those he signed as an agent and the memories of teammates who played alongside him.