Eric Young Jr., son of former Major League Baseball player Eric Young Sr., followed in his father's footsteps to pursue a career in professional baseball. Known for his speed and agility, Young Jr. played as an outfielder and second baseman during his time in Major League Baseball (MLB).

Young Jr. began his MLB career with the Colorado Rockies, the team that drafted him in the 30th round of the 2003 MLB Draft. He made his debut on August 25, 2009, against the Los Angeles Dodgers. In his first season, he quickly demonstrated his base-stealing abilities, a skill that would become a hallmark of his playing style. His speed on the bases and in the outfield made him a valuable asset to the Rockies.

In 2011, Young Jr. had a breakout season with the Rockies, showcasing his ability to get on base and create scoring opportunities. His performance that year included a .247 batting average and 27 stolen bases, which highlighted his role as a leadoff hitter and base-stealing threat. However, his time with the Rockies was marked by frequent injuries, which limited his playing time and consistency.

In June 2013, Young Jr. was traded to the New York Mets. This move provided him with a fresh start and an opportunity to play regularly. He quickly became a fan favorite in New York, leading the National League in stolen bases that year with 46. His speed and energy injected life into the Mets' lineup, and he was often seen as a catalyst for the team's offense.

Young Jr.'s tenure with the Mets lasted until 2014, after which he had brief stints with several other teams, including the Atlanta Braves, New York Yankees, and Milwaukee Brewers. Despite the frequent team changes, he continued to be recognized for his speed and defensive capabilities. In 2016, he returned to the Rockies, the team where he began his MLB journey, albeit for a short period.

In 2017, Young Jr. signed a minor league contract with the Los Angeles Angels. He was called up to the majors in May of that year and made an immediate impact with his speed and defensive prowess. During his time with the Angels, he filled in for injured players and provided depth to the outfield. His performance in 2017 included a .264 batting average and 12 stolen bases in 47 games.

Young Jr.'s career in MLB was characterized by his ability to adapt and contribute to various teams, often stepping in as a reliable option in the outfield and on the bases. His speed remained his most valuable asset throughout his career, allowing him to excel in stealing bases and covering ground defensively.