Hervelle spent the early part of his career in
Belgium. He first played with
Verviers-Pepinster in the
Belgian League for four years, averaging 11.4 points and 10.6 rebounds per game, in 16 Belgian League games during the 2003–04 season, and becoming the team's
captain at only 20 years old. He then signed with the
Spanish ACB League club
Real Madrid. In the 2005/06 season, he averaged 24 minutes, 8.5 points, and 5.5 rebounds per game, over 32 games played in the Spanish League. In January 2010, Hervelle signed with
Bilbao. On 3 August 2018, Hervelle signed a one-year contract with
Spirou of the Belgian League. On 30 November 2020, Hervelle announced his retirement.
NBA draft rights Hervelle was drafted by the
Denver Nuggets, in the second round (52nd pick overall) of the
2005 NBA draft. He became the first Belgian player ever to be drafted by an
NBA team. In 2009, his
NBA draft rights were traded to the
Houston Rockets, in exchange for
James White. On 27 November 2020, Hervelle's draft rights were traded to the
New York Knicks. ==National team career==