Mary Kom is the only woman boxer to have won a medal in each one of the six world championships.
Mary Kom is the only Indian woman boxer to have qualified for the 2012 Summer Olympics, competing in the flyweight (51 kg) category and winning the bronze medal.
The film was not released in Mary Kom's home state, i.e. Manipur due to a ban on Hindi films by separatist groups in Manipur.
Mary Kom wrote an autobiography called Unbreakable on which movie is based.
While shooting, Priyanka Chopra got a broken thumb and later on she said that her broken thumb was a medal for her.