Wallace Johnson, known for his role as a pinch hitter, played in Major League Baseball primarily with the Montreal Expos. Born on December 25, 1956, in Gary, Indiana, Johnson attended Indiana State University, where he honed his skills on the baseball field. His talent caught the attention of scouts, leading to his selection by the Montreal Expos in the sixth round of the 1979 MLB Draft.

Johnson's major league debut came on September 8, 1981, with the Expos. Throughout his career, he was primarily utilized as a pinch hitter, a role in which he excelled. His ability to deliver in clutch situations made him a valuable asset to his team. Over the years, Johnson became known for his calm demeanor and strategic approach at the plate, often coming through with key hits when his team needed them most.

One of the highlights of Johnson's career occurred during the 1981 National League Division Series against the Philadelphia Phillies. In a critical moment, he delivered a pinch-hit triple that helped the Expos secure a victory. This performance cemented his reputation as a reliable pinch hitter and contributed to the Expos' success in the postseason.

Throughout his time with the Expos, Johnson's batting average hovered around the .255 mark, with occasional flashes of power. While he did not hit many home runs, his ability to get on base and advance runners was highly valued. Johnson's role on the team was not limited to his on-field performance; he was also known for his leadership in the clubhouse, providing guidance and support to younger players.

In 1988, Johnson briefly joined the San Francisco Giants, but his tenure with the team was short-lived. He returned to the Expos later that year, continuing to serve as a pinch hitter and occasional outfielder. His familiarity with the team and his consistent performance made him a reliable option off the bench.

Johnson's career in the major leagues concluded after the 1990 season. Over the course of his career, he played in 428 games, primarily as a pinch hitter and outfielder. While his time in the majors may not have been marked by headline-grabbing statistics, his contributions to his teams were appreciated by teammates and coaches alike.

After retiring from playing, Johnson transitioned into coaching and player development roles. He worked within the Chicago White Sox organization, sharing his knowledge and experience with the next generation of players. His post-playing career demonstrated his continued commitment to the sport and his desire to help others succeed.