He defended his championship against Edge and Jericho in a triple threat match on the April 16 episode of SmackDown , and against Randy Orton in an Extreme Rules match at the Extreme Rules pay-per-view . He successfully defended his championship against Edge and Jericho in a triple threat match on the April 16 episode of SmackDown , and against Randy Orton in an Extreme Rules match at the Extreme Rules pay-per-view .