In the SmackDown Elimination Chamber match Competition , The Undertaker defended Defending the World Heavyweight Championship against Chris Jericho , John Morrison , Rey Mysterio , CM Punk , and R-Truth .

In the main event , The Rock , in his first match since WrestleMania XX in 2004 , teamed Cause_to_amalgamate with John Cena and defeated Conquering The Miz and R-Truth .