On July 19, 2017, Domingo signed a 1-year contract with Donar of the Dutch Basketball League.[2] On September 19, 2017, Domingo made his debut for Donar in the Champions League qualifying rounds. Domingo's performance on both ends of the court was recognized during Donar's FIBA Europe Cup campaign.[3] In the FIBA Europe Cup, Domingo averaged 8.9 points per game and 3.8 rebounds per game in 21.9 minutes played, shooting 66.7% on field goals and 37.5% on three-point field goals. He scored in double figures in four of nine Europe Cup games played, including 13 points in a win against Keravnos in the second round of Europe Cup [4] and was instrumental in their second round win against Cluj.[5] Domingo suffered an MCL sprain in 2018 and returned to the US for rehab.[6]
In the 2021 NBA Summer League, Stephen Domingo played for the San Antonio Spurs.[8]
Fort Wayne Mad Ants (2021–2022)
In 2021, Domingo joined the Fort Wayne Mad Ants.[9] However, he was waived on February 22, after suffering a season-ending injury.[10]
Tindastóll
In September 2023, Domingo signed with Tindastóll of the Icelandic Úrvalsdeild karla.[11] On 24 October, the team announced it had released Domingo.[12]
In June 2019, Domingo was announced as part of preliminary roster for the Nigerian team competing in the 2019 FIBA Basketball World Cup in China.[15] On July 22, 2019, Domingo started for Nigeria in a friendly scrimmage against the FIBA World Cup-bound Dominican Republic national team, which Nigeria won.[16] Domingo was the second leading scorer with 16 points on 54% shooting and 4/9 from 3 point range.