Cassius Xavier-Lamarr Winston (born February 28, 1998) is an American professional basketball player for Pallacanestro Reggiana of the Italian Lega Basket Serie A (LBA).

[3] As a sophomore, he became a full-time starter, averaging 12.6 points and 6.9 assists per game for the Spartans, and earning third-team All-Big Ten Conference honors.

[7] On March 31, 2019, Winston scored 20 points along with 10 assists in a 68–67 win against Duke in the Elite Eight of the 2019 NCAA Division I men's basketball tournament.

[8] Prior to the start of the 2019–20 season, Winston was unanimously named a preseason All-American by the Associated Press (AP), the only player so honored.

[15] However, since Washington's affiliate, the Capital City Go-Go withdrew from the tournament, he was assigned to the Erie BayHawks for the NBA G League season, making his debut on February 10, 2021.

[20] On July 19, 2024, he signed two-year deal with Pallacanestro Reggiana of the Italian Lega Basket Serie A (LBA).