Colsaerts is the third European player to sign with Steinberg in less than a month. Just days after winning the US Open, Justin Rose announced that he was signing with Excel Sports. Steinberg also signed former Illinois standout, the 2012 NCAA champion, Thomas Pieters.
Tiger Woods, Matt Kuchar, Gary Woodland, Patrick Cantlay and Chris Williams are the Americans who are represented by Excel Sports. On the LPGA Tour, Steinberg represents Danielle Kang and Cheyenne Woods, Tiger's niece.
Steinberg joined Excel Sports in July 2011 after leaving IMG, where he worked closely with Tiger.
Colsaerts, 30, has two wins on the European Tour and seven other victories worldwide.