Jonathan Seda is an American actor. Seda was an amateur boxer who auditioned for and was given a role in the 1992 boxing film Gladiator. He played the role of Chris Pérez alongside Jennifer Lopez in the movie Selena and Detective Antonio Dawson in NBC's Chicago P.D.. He also played the role of Paul Falsone in the show Homicide: Life on the Street. He also played the role of U.S. Marine John Basilone, recipient of the Medal of Honor, in Tom Hanks and Steven Spielberg's The Pacific.