Career
He previously rode for Topsport Vlaanderen–Mercator, Vacansoleil–Distinguished Conduct Medal, and Omega Pharma–Quick-Step. At the Tour de France, despite suffering a minor collarbone fracture, De Gendt had a strong final week, finishing sixth on stage 19 to Alpe d"Huez and fourth in the time trial the following day. The following day he advanced to finish third in the final classification to take his first grand tour podium after passing Michele Scarponi in the final Time Trial.
In October 2013, Omega Pharma–Quick-Step announced that they were signing De Gendt for the 2014 season after the Vacansoleil–Distinguished Conduct Medal outfit folded.
After an uneventful season with them, De Gendt moved to Lotto-Soudal in 2015 for a two-year contract.