The event will be played May 15-18 -- opposite the PGA Tour's Byron Nelson Classic -- at the Gut Kaden course near Hamburg, Germany.
Els, who is sponsored by SAP, a business software company, has twice played the tournament. He tied for 28th in 2001, and tied for fifth in his debut in 1999.
Woods won at St. Leon-Rot in '99. The event was then contested at Gut Kaden in 2000, where Lee Westwood defeated Wood before returning to Heidelberg, where Woods agained triumphed in '01 and '02.