Dal Maxvill's career in Major League Baseball spanned over three decades, during which he became known for his defensive prowess as a shortstop and later transitioned into a front-office role. Born on February 18, 1939, in Granite City, Illinois, Maxvill attended Washington University in St. Louis, where he played both baseball and basketball. His athletic abilities caught the attention of the St. Louis Cardinals, who signed him as an amateur free agent in 1960.

Maxvill made his major league debut with the Cardinals on June 10, 1962. Initially, he served as a backup infielder, but his defensive skills soon earned him a more regular spot in the lineup. Known for his exceptional glove work, Maxvill was a key component of the Cardinals' infield during the 1960s. He played a crucial role in helping the team secure two World Series titles in 1964 and 1967. In the 1964 World Series, Maxvill's defensive contributions were vital, and he continued to be a reliable presence in the 1967 championship run.

Throughout his playing career, Maxvill was not known for his batting prowess, often posting modest offensive numbers. However, his defensive capabilities were highly regarded, and he was considered one of the best defensive shortstops of his era. Maxvill's ability to make difficult plays look routine earned him respect from teammates and opponents alike.

In 1972, Maxvill was traded to the Oakland Athletics, where he continued to showcase his defensive skills. He was part of the Athletics' roster during their 1972 World Series victory, adding another championship ring to his collection. After brief stints with the Pittsburgh Pirates and the Oakland Athletics again, Maxvill retired as a player in 1975.

Following his playing career, Maxvill transitioned into coaching and front-office roles. He returned to the St. Louis Cardinals organization, where he served as a coach and later as the team's general manager from 1985 to 1994. During his tenure as general manager, the Cardinals reached the World Series in 1985 and 1987, although they did not secure a championship in either appearance.

Maxvill's time as general manager was marked by his focus on building competitive teams through strategic trades and player development. His efforts helped maintain the Cardinals' status as a competitive franchise in the National League. After leaving the Cardinals in 1994, Maxvill continued to be involved in baseball in various capacities.