As an actor, Ballas played the lead role of Tony in the musical Copacabana and was the lead dancer in the UK national tour of the Spanish musical Maria de Buenos Aires.
He was also the understudy for the role of Ritchie Valens in the UK national tour of Buddy, The Buddy Holly Story.
He began competing on the show in the fall of 2007.
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On September 6, 2016, it was announced that Ballas would be the final actor to portray the role of Frankie Valli in the Broadway cast of Jersey Boys before it closes in 2017.
On the fifth season of Dancing with the Stars, Ballas was partnered with Cheetah Girls star Sabrina Bryan.
In week 7, he danced with former partner Shawn Johnson because her partner, Derek Hough suffered a neck injury.