<P> Seven matches were contested at the event , including one match on the pre-show . The event was the first to include a tag - team Chamber match . In the main event , Dean Ambrose defeated WWE World Heavyweight Champion Seth Rollins by disqualification . Also , Kevin Owens defeated John Cena in his debut match at the event . </P>
<P> Seven matches were contested at the event , including one match on the pre-show . The event was the first to include a tag - team Chamber match . In the main event , Dean Ambrose defeated WWE World Heavyweight Champion Seth Rollins by disqualification . Also , Kevin Owens defeated John Cena in his debut match at the event . </P>
who won the wwe championship elimination chamber 2015
who won the wwe championship elimination chamber 2015
Dean Ambrose
Dean Ambrose