Mary Cain, the promising distance runner whose career fizzled after what she has described as four miserable years at the Nike Oregon Project, has filed a $20 million lawsuit against her former coach, Alberto Salazar, and their employer, Nike. Cain accused Salazar of emotionally abusing her when she joined the team as a 16-year-old. The lawsuit portrays Salazar as an angry control freak who was obsessed with Cain's weight and didn't hesitate to publicly humiliate her about it. That, she said, took a toll on her physical and mental health. Nike was aware, the lawsuit alleges, but failed to intervene. Nike did not return messages. Salazar could not be reached but has previously denied abuse allegations, and he has said neither Cain nor her parents had raised concerns while she was part of the program. In the lawsuit filed Monday in Multnomah County Circuit Court, Cain alleges Salazar on several occasions required her to get on a scale in front of other people and would then criticize her.