Flagler signed a contract with the Thunder on Friday, Michael Scotto of USA Today reports.
Flagler played a prominent role at Baylor over the past two seasons and averaged 15.6 points, 4.6 assists and 2.4 rebounds in 33.6 minutes per game during the 2022-23 campaign. He wasn't selected in the 2023 NBA Draft but will compete for a role with the Thunder during the offseason.