Eugenie Bouchard slump-ed to a first-round defeat at the US Open yesterday but the Canadian might yet leave Flushing Meadows a big winner with her lawsuit against the Grand Slam and US Tennis Association still to hit the courts. Last year Bouchard exited under equally unhappy circumstances when she slipped on a wet locker room floor after a mixed doubles match. She sustained a concussion that forced her to withdraw from her fourth-round singles contest.The 22-year-old, once ranked fifth in the world, has since filed a lawsuit against the US Open and the US Tennis Association.A report in the New York Times said Bouchard's lawyer, Benedict Morelli, has indicated he is seeking "millions and millions" in damages. The winner of the US Open will take $3.5-million.Bouchard said she was completely focused on what was happening on the tennis court and had left legal matters to her lawyers."I am 100% focused on tennis and I have lawyers who are working on the case," Bouchard said."I'm disappointed with what I think happened so I have to fight for what is right."This year Bouchard had no one to blame but herself for her first-round stumble as she was tripped up 6-3 3-6 6-2 by 20-year-old Czech Katerina Siniakova, who had a first win at the US Open.Despite the looming legal battle, Bouchard said she had been treated well by USTA officials but conceded it was awkward."If I sit down and think about it, yeah, it is definitely a strange situation. Obviously being here it has crossed my mind but it has nothing to do with my day-to-day life."In 2014 Bouchard arrived at the year's final Grand Slam on the cusp of tennis super stardom. She rode a wave of Grand Slam momentum into the US Open, where she was seeded seventh and hyped as the next face of women's tennis.But even before her concussion, Bouchard's star had already begun to fade behind a string of lacklustre results she claimed was exacerbated by the accident that caused her to cut short last season. ..