[6] Derrickson averaged 15.9 points and 8.1 rebounds per game, second on the team in both categories to Jessie Govan, and was the top three-point shooter, making 46.5 percent of his attempts.

[10] In his G League debut, Derrickson contributed 20 points on 7-of-10 shooting, three rebounds and three assists as the Warriors defeated the Northern Arizona Suns 118–108.

[11] Derrickson made his NBA debut on November 10, 2018, recording 2 points and 1 rebound, in 6 minutes, in a 116–100 win against the Brooklyn Nets.

[16] On June 26, 2020, Derrickson signed with the Busan KT Sonicboom of the Korean Basketball League (KBL).

[22] On August 11, 2022, Derrickson signed with the Seoul Samsung Thunders of the Korean Basketball League (KBL).

[25][26] On July 1, 2024, Derrickson rejoined the Seoul Samsung Thunders of the Korean Basketball League (KBL).