Christy Courtesy of Black Bear Productions Share on Facebook Share on X Share to Flipboard Send an Email Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Print the Article Post a Comment Sydney Sweeney is "proud" of working on the Christy Martin biopic Christy despite a low box office debut. Taking to Instagram on Monday, the actress, who portrays trailblazing boxer Christy Martin in the biopic Christy, reflected on making the film that opened to $1.3 million from 2,011 sites and couldn't crack the top 10 at the box office.