Fact-based drama Christy suffers historically bad opening weekend in latest string of commercial disappointments for rising star

Sydney Sweeney is taking the dismal box office performance of Christy, the R-rated biographical drama in which she plays trailblazing boxer Christy Martin, in her stride.

The film, directed by David Michôd, opened to $1.3m this weekend, making for one of the worst US starts ever for a movie opening in more than 2,000 theaters.

“We don’t always just make art for numbers, we make it for impact,” Sweeney wrote on Instagram. “And christy has been the most impactful project of my life.”

The film, co-starring Ben Foster, Merritt Wever and Katy O’Brian, chronicles Martin’s rise to fame in the 1990s, as she went from the daughter of a West Virginia coal miner to one of the most prominent female boxers in the US. It also depicts her coach-turned-husband’s physical abuse, culminating in an attempt on her life. The film received mixed reviews, with some critics praising Sweeney’s performance, in which she plays Martin over 20 years, as worthy of award consideration.