The two stars of the film were joined on the red carpet by their director Peter Segal.
Earlier in the day, Sylvester and Robert attended a photo call for the film at the Hassler Hotel.
Grudge Match is currently playing nationwide in the US, and will open on January 9 in Italy. Be sure to check it out!
15+ pictures inside of Robert De Niro and Sylvester Stallone at the premiere for Grudge Match in Rome… More Here! »