Simmons began his professional career in 2006 when he joined the
Greek League club
PAOK. He then moved to the
Spanish League and
ULEB Cup club
Gran Canaria for the
2006–07 season, but in the middle of the season moved to Israel and signed for the
Superleague club
Hapoel Galil Elyon. The
following season he moved to
Hapoel Holon with whom he won the league championship. He joined the
Euroleague club
Maccabi Tel Aviv for the 2008–09 season. For the 2009–10 season he signed with
Hapoel Jerusalem. From 2010 to 2012 he played for
ČEZ Nymburk in Czech Republic where he won Czech National Championship and the Czech National Cup. In June 2012 he signed with
Krasnye Krylya Samara of Russia for the 2012–13 season. In July 2013, he returned to ČEZ Nymburk. On May 29, 2015, he signed with
Cangrejeros de Santurce of Puerto Rico for the 2015
BSN season. On November 29, 2015, he signed with
Hapoel Tel Aviv. On August 26, 2016, he signed with French club
Antibes Sharks. On December 18, 2017, he returned to Israel for a third stint, signing with
Hapoel Afula of the
Liga Leumit for the rest of the season. One day later, he made his debut in a 94–92 win over
Maccabi Hod HaSharon, recording 22 points, four assists and four rebounds. On November 8, 2018, he announced his retirement from playing professional basketball. == Coaching career ==