Undrafted out of college, Vincent signed with the Stockton Kings of the NBA G League before joining the Miami Heat on a two-way contract.

[3] Vincent played college basketball for University of California, Santa Barbara from 2014 to 2018, averaging 12.8 points in 113 games.

[11] In the G League, Vincent tallied 27 points, three assists and one rebound in a win over the Salt Lake City Stars on February 3.

On June 22, 2020, the NBA G League announced that Vincent won the Most Improved Player award.

[15] In Game 3 of the 2023 Eastern Conference Finals, Vincent scored a playoff career-high of 29 points in a 128–102 win to give the Heat a 3–0 lead over the Boston Celtics.

In Game 2 of the 2023 NBA Finals, Vincent had a team-high 23 points in a 111–108 win over the Denver Nuggets to tie the series 1–1.