be called up to the majors

sports Of a minor league athlete, to be given the opportunity to play for a major league team. Primarily heard in US. Because I wasn't a high-profile draft pick, I had to start my career in the minors and hope to be called up to the majors. After being called up to the majors at the beginning of the year, the impressive young pitcher has already set a new record for the most strikeouts in a single season. Wait, the kid who hit that walk-off home run was just called up to the majors yesterday? Wow.