MJ Martin (played by Marsha Thomason) is a sports agent who agrees to represent Kaylie. A former tennis star, she now works for one of the major sports agencies in America. She and Sasha previously had a relationship when Sasha was a young gymnast, and they still make references to the relationship. MJ initially wanted to represent Payson, but Payson's parents would not allow it. Kaylie asked MJ to represent her, but MJ said no, until Kaylie proved she really wanted to succeed in gymnastics. MJ tried to portray Nicky and Kaylie as a golden couple, much to the two's annoyance.