The event marked the debut of Trixter guitarist Steve Brown in the band's lineup while Vivian Campbell undergoes a stem cell transplant this fall in his ongoing battle with cancer.

Def Leppard performed "Animal", "Let's Get Rocked" and "Pour Some Sugar On Me" at Wembley as NFL cheerleaders danced around the field. Up next, the UK rockers will play three casino shows in California at the end of October.

Campbell was diagnosed last year with Hodgkin's Lymphoma, and immediately began chemotherapy and other treatments at the time. "While I can't say that I'm looking forward to the process ahead, I'm very much looking forward to what I feel will be a most successful outcome," says Campbell.

"Next year will be very busy for Def Leppard with a new album and a world tour, and frankly, I don't think they would sound as loud without me, so I have no intention of letting the team down! See you all (with hair!) in 2015."