Todd Walker, a left-handed second baseman, made his entry into Major League Baseball (MLB) with the Minnesota Twins. Drafted in the first round of the 1994 MLB Draft, Walker quickly ascended through the minor leagues, showcasing his hitting prowess. By 1996, he was ready for the big leagues, debuting with the Twins and beginning a career that would span over a decade.

Walker's tenure with the Twins lasted until 2000. During this period, he demonstrated consistent offensive skills, particularly noted for his ability to hit for average. His time in Minnesota was marked by steady improvement, and he became a reliable presence in the lineup. However, in 2000, Walker was traded to the Colorado Rockies, where he continued to display his batting abilities. The high altitude of Coors Field, known for being a hitter-friendly park, suited Walker's style, and he posted impressive numbers during his stint with the Rockies.

In 2001, Walker found himself on the move again, this time to the Cincinnati Reds. His performance remained solid, and he continued to be a dependable hitter. Walker's ability to maintain a good batting average and contribute offensively made him a valuable asset to the Reds' infield. However, his journey through MLB was far from over, as he was traded to the Boston Red Sox in 2003.

With the Red Sox, Walker played a crucial role during the 2003 season, particularly in the postseason. His performance in the American League Division Series (ALDS) against the Oakland Athletics was noteworthy, as he hit key home runs that helped the Red Sox advance. Although Boston fell short in the American League Championship Series (ALCS) against the New York Yankees, Walker's contributions were a highlight of the Red Sox's playoff run.

After his time in Boston, Walker signed with the Chicago Cubs in 2004. Over the next two seasons, he continued to be a reliable hitter, providing the Cubs with a steady presence at second base. His tenure with the Cubs was marked by consistent offensive production, and he became a fan favorite at Wrigley Field.

In 2006, Walker was traded to the San Diego Padres, where he played for part of the season before being traded again to the Oakland Athletics. His time with the Athletics was brief, and by 2007, Walker's MLB career was winding down. He signed with the Cincinnati Reds for a second stint but was released before the season began.

Throughout his career, Walker was known for his offensive capabilities, particularly his ability to hit for average and get on base. While his defensive skills were often considered average, his bat made him a valuable player for several teams. Walker's career statistics include a .289 batting average, 107 home runs, and 545 RBIs, reflecting his consistent performance at the plate.