2013–15 After going
undrafted in the
2013 NBA draft, Cooper signed his first professional contract in August 2013, with the
Greek Basket League's
PAOK for the 2013–14 season. On August 18, 2014, he signed with
Enisey Krasnoyarsk of Russia for the 2014–15 season. On May 12, 2015, he signed with the Greek club
Panathinaikos for the rest of the
2014–15 Greek Basket League season. On August 1, 2015, he signed with
Krasny Oktyabr of Russia. On November 21, 2015, he left the Russian club and signed a two-year contract with
AEK Athens of Greece. He left AEK after appearing in seven games. On January 25, 2016, he signed with
AS Monaco Basket for the rest of the season.
2016–18 On August 8, 2016, Cooper signed with
Élan Béarnais Pau-Orthez of France. Cooper was the assists leader in the
2016–17 Pro A season, and after the regular season he was named the competition's
Most Valuable Player. On July 8, 2017, Cooper signed a two-year deal with French club
BCM Gravelines. On October 16, 2017, he parted ways with Gravelines after appearing in four games. Three days later, he returned to AS Monaco. After averaging 6.9 points and 7.2 assists per game in the 2017–18 season, Cooper announced he was leaving Monaco on September 7, 2018.
2020–present On June 10, 2020, Cooper signed with
Élan Chalon of the
LNB Pro A in France. He parted ways with the team on October 8, after appearing in three games and averaging 9.6 points and 6.6 assists per game. On November 3, Cooper signed with the
Dorados de Chihuahua of the
Liga Nacional de Baloncesto Profesional in Mexico; he played two games for them. On December 14, 2020, he signed with
Stal Ostrów Wielkopolski in Poland, but he left them on December 23. On February 25, 2021, he signed with
Dnipro Dnipropetrovsk in Ukraine. On July 5, 2022, he signed with
Ironi Ness Ziona of the
Israeli Basketball Premier League. On November 7, 2024, he signed with
Śląsk Wrocław of the
Polish Basketball League (PLK). On February 18, 2025, he signed with
Hapoel Holon of the
Israeli Basketball Premier League.
Suspension In 2019, FIBA issued Cooper a two-year suspension for using another person's urine in an attempt to cheat a doping test. The test initially indicated an elevated level of
human chorionic gonadotropin, which is most commonly produced by the
placenta during pregnancy. That urine, according to the report, belonged to his girlfriend. ==National team career==