After UMass, Forbes participated in the
NBA Pre-Draft Camp in
Orlando in the summer of 2008. However, he was not selected in the
2008 NBA draft. The
Washington Wizards invited him to participate in their summer mini-camp, and he played in all 5 games, but he only averaged 3.8 points and 0.6 rebounds per game. In August 2008, Forbes had signed with Italian club
Basket Napoli, but the team soon dissolved. Forbes was selected as the #4 overall pick in the
2008 NBA Development League draft, by the
Sioux Falls Skyforce. In the D-League's 2008–09 season, he played 22 games for Sioux Falls before being traded to the
Tulsa 66ers, where he played in 30 games. Overall that season, Forbes averaged 17.4 points and 5.3 rebounds per game. He also participated in the league's All-Star weekend, finishing third in the Three-Point Shootout. Forbes then played several short stints with international clubs. • May 2009: played for the Talk N Text Tropang Texters club in the
Philippines. Played in 2 games, and averaged 27.5 ppg. • May/June 2009: played for Carabobo Globetrotters in
Venezuela. Played 5 games. • July 2009: played in the NBA's Summer League with the
Philadelphia 76ers. • July 2009: signed with Italian club Soresina. • August 2009: signed with Italian club Gruppo Triboldi. • 2009–10: played for Italian club Vanoli Cremona. Played in 15 games, averaged 13.3 ppg. • 2010: played for
Ironi Kfar Hamaccabia Ramat Gan in the
Israeli Basketball Super League. The club started 2–11 before Forbes joined, then went 4–5 the rest of the regular season with him. Forbes scored 28 in his team debut, then went on to average 20.3 ppg (best in the league). However, the team's poor season record forced them to the Relegation Playoffs, where they lost their series, and would be demoted to the
National League in the 2010–11 season. In July 2010, Forbes returned to the US for another shot at the NBA. He was invited to play with the
Houston Rockets on their summer league team in
Las Vegas. Forbes played in 4 of the team's 5 games, averaging 3.8 points and 3.0 rebounds per game. On September 18, 2010, the
Denver Nuggets invited Forbes to a training camp. Playing in 8 games, Forbes averaged 19.0 minutes, 10.1 points, and 2.9 rebounds per game. He survived pre-season cuts and made the season roster. On December 10, 2011, Forbes signed an offer sheet with the
Toronto Raptors. On December 13, 2011, Forbes was officially signed by the Raptors. On July 11, 2012, Forbes was traded to the
Houston Rockets along with a future first round pick for
Kyle Lowry. He was waived by Houston on October 29, 2012. In December 2012, Forbes joined the
Zhejiang Lions club in the
Chinese Basketball Association. He replaced
Al Thornton on the team. In September 2013, Forbes signed with the
Brooklyn Nets. However, he was waived on October 17. On November 1, 2013, Forbes was acquired by the
Springfield Armor. On January 3, 2014, he was waived by the Armor due to a season-ending injury. On December 21, 2015, Forbes signed with
Atenienses de Manatí of the Puerto Rican
Baloncesto Superior Nacional. On March 28, 2016, he left Atenienses and was acquired by the
Grand Rapids Drive. That night he made his debut for the Drive in a 136–105 loss to
Raptors 905, recording four points, two rebounds and one assist in one minute. On November 1, 2016, Forbes was acquired by the
Long Island Nets of the
NBA Development League. On January 17, he was waived by the Nets after appearing in 20 games. On February 19, 2017, Forbes signed with
Boca Juniors of the
Liga Nacional de Básquet. On September 21, 2017, Forbes signed with
Faros Larissas for the
2017–18 Greek Basket League season. On February 24, 2018, he joined
Al-Ittihad Jeddah of the
Saudi Premier League. ==National team career==