[1] As a freshman at Florida State, Mann averaged 5.2 points and 17.0 minutes per game playing behind Malik Beasley and Dwayne Bacon.

[5] Mann came down with a torn abdominal and groin muscle in the first round of the 2017 NCAA Tournament and was limited as the Seminoles reached the Elite Eight.

[13] On October 24, 2019, Mann made his NBA debut, coming off the bench in a 141–122 win over the Golden State Warriors with a rebound.

[15] On August 14, 2020, in a game against the Oklahoma City Thunder, Mann recorded a then-career-high 25 points, 14 rebounds and nine assists in 42 minutes.

In game 6, Mann dropped a career-high 39 points on 7-of-10 shooting from three-point range in a 131–119 victory, sparking a 25-point comeback and leading the Clippers to the Western Conference Finals for the first time in franchise history.

[19] On February 6, 2025, Mann and Bones Hyland were traded to the Atlanta Hawks in exchange for guard Bogdan Bogdanović, and three second-round draft picks.