Question: Name the 2010 American biographical sports drama film directed by David O. Russell, starring Erica McDermott as Cindy 'Tar' Eklund, the lead character's sister?
Sentence (from "The Fighter"): The Fighter is a 2010 American biographical sports drama film directed by David O. Russell, and starring Mark Wahlberg (who also co-produced), Christian Bale, Amy Adams and Melissa Leo.
Relevant evidence: Yes