Sultan director Ali Abbas Zafar said that he was "bowled over" by Anushka Sharma's look and "accurate accent" in the film.
"As the female wrestler on the set, armed with an accurate accent, Anushka bowled me over," Ali said in a statement.
Anushka, for over six weeks, put herself through a demanding and rigorous work out that lasted for hours.
Anushka trained with three different trainers to build different skill sets. Her first trainer taught her wrestling, the second focussed on strength training, and to cope with the day long exhausting workout, her physiotherapist would do stretches and basic physical training to relax her muscles.
Anushka, who is a vegetarian, had to stick to a high protein diet.
"To be honest, I was a little concerned on how much would she be able to manage in just six weeks. But I have faith in Anushka's complete commitment to her work. She has coped up with a tough training schedule without a break and without any complaints," added Ali.
Sultan casts Salman Khan and Anushka Sharma as wrestlers.
Produced by Yash Raj Films, Sultan is scheduled to release on Eid this year.