Xavier Ellis Booker (born September 9, 2004) is an American college basketball player for the UCLA Bruins of the Big Ten Conference. He previously played for the Michigan State Spartans. He was a consensus five-star recruit and one of the top players in the 2023 class.
Booker grew up in Indianapolis, Indiana, and attended Cathedral High School. A center, he averaged 12.5 points, 6.7 rebounds and 2.3 blocks per game as a junior as Cathedral won the Class 4A state championship. Booker was selected to play in the 2023 McDonald's All-American Boys Game. He was also named the Indianapolis City Co-Player of the Year.
Booker was a consensus five-star recruit and one of the top players in the 2023 class, according to major recruiting services. On July 30, 2022, he committed to playing college basketball for Michigan State over offers from Auburn, Duke, Cincinnati, Gonzaga, Indiana, Michigan, Notre Dame, Ohio State, Oregon and Purdue.
Booker enrolled at Michigan State University shortly after graduating high school in May 2023. In his freshman season, he appeared in 27 games and made two starts, averaging 3.7 points and 1.7 rebounds per game. In his sophomore season, he averaged 4.7 points and 2.2 rebounds per game in 33 appearances, including 3 starts.
On April 1, 2025, Booker announced he would be entering the NCAA transfer portal, and on April 4, he announced he would officially be transferring to the University of California, Los Angeles, with two years of college eligibility remaining. The Bruins earned a No. 7 seed in the 2026 NCAA tournament. In UCLA's opener, Booker started in place of an injured Tyler Bilodeau, the team's leading scorer, and he scored 15 points along with eight rebounds and four blocks in a 75âÂÂ71 win over No. 10âÂÂseed UCF.
|- | style="text-align:left;"| 2023âÂÂ24 | style="text-align:left;"| Michigan State | 27 || 2 || 9.3 || .439 || .333 || .632 || 1.7 || .2 || .1 || .5 || 3.7 |- | style="text-align:left;"| 2024âÂÂ25 | style="text-align:left;"| Michigan State | 33 || 3 || 12.8 || .417 || .233 || .786 || 2.2 || .2 || .1 || .7 || 4.7