Hammons first attended Carmel High School in Indiana, where he averaged 8.3 points and 7.8 rebounds as a sophomore, earning honorable mention Associated Press accolades.

In his junior season, he transferred to Oak Hill Academy, where as a senior, he averaged 7.0 points, 6.8 rebounds and 4.0 blocks per game.

[3] Hammons was named to the Big Ten All-Freshman Team at the conclusion of his first season playing for the Purdue Boilermakers, where he averaged 10.6 points, 6.0 rebounds and 2.0 blocks per game.

[8] On July 7, 2017, Hammons was traded to the Miami Heat in exchange for Josh McRoberts, a 2023 second round draft pick and cash considerations.

[9][10] Hammons was waived by the Heat on February 8, 2018, without appearing in a game for the team, instead spending the majority of his tenure on assignment with the Sioux Falls Skyforce.