Mark Ballas says Derek Hough helped him

In the season 33 finale of 'Dancing with the Stars,' Derek Hough and best friend Mark Ballas showed off their skills with a ...
The "Dancing With the Stars" judge is dishing on the blink-and-you'll-miss-them parts he and his sister Julianne had in the ...
Derek Hough and Mark Ballas danced a breathtaking, male Argentine Tango during the finale of season 33 of ABC's 'Dancing with ...