Jim Fregosi's journey through the world of baseball began when he was signed by the Boston Red Sox as an amateur free agent in 1960. However, it was with the Los Angeles Angels, later known as the California Angels, that he truly established himself as a major league player. Fregosi was selected by the Angels in the 1960 MLB Expansion Draft, and he quickly became a cornerstone of the team.

As a shortstop, Fregosi was known for his defensive skills and strong arm. He made his major league debut in 1961 and soon became a regular fixture in the Angels' lineup. Over the course of his playing career, Fregosi was selected to six All-Star teams, reflecting his status as one of the top shortstops in the league during the 1960s. His best season came in 1967 when he hit .290 with 12 home runs and 44 RBIs, earning him a Gold Glove Award for his defensive prowess.

Fregosi's tenure with the Angels lasted until 1971, when he was traded to the New York Mets in a deal that included a young pitcher named Nolan Ryan. While his time with the Mets was not as productive, Fregosi continued to play in the majors with the Texas Rangers and the Pittsburgh Pirates before retiring as a player in 1978.

Transitioning from player to manager, Fregosi took on his first managerial role with the California Angels in 1978. He led the team to a division title in 1979, showcasing his ability to guide and develop a team from the dugout. After his stint with the Angels, Fregosi managed the Chicago White Sox from 1986 to 1988.

Perhaps his most memorable managerial role came with the Philadelphia Phillies. Taking over in 1991, Fregosi led the Phillies to the National League pennant in 1993. The team, known for its colorful personalities and gritty play, reached the World Series but ultimately fell to the Toronto Blue Jays in six games. Fregosi's leadership during this period was widely recognized, and he remained with the Phillies until 1996.

Fregosi's final managerial position was with the Toronto Blue Jays from 1999 to 2000. After stepping down as a manager, he continued to work in baseball as a scout and advisor, sharing his extensive knowledge and experience with various organizations.

Throughout his career, Jim Fregosi was respected for his baseball acumen and leadership abilities.