Murphy is entering his fourth season with the Redskins after being the team's top pick in the 2014 NFL Draft out of Stanford.
The injury occurred in the first quarter when Murphy was involved in a third-down stop against the Ravens offense.More news: Blackburn: Charlottesville Riot Violence Has 'No Place in Civil Society'
More news: Trump makes false claims about United States nuclear arsenal
More news: UP government orders inquiry, suspends medical college principal
While Miami's front office and coaching staff will look to move forward without the rookie linebacker, the Redskins were already expecting Murphy to miss the first four games of the 2017 season. The play's path came in Murphy's direction on the left side of the defense, and two of his teammates rushing to make the tackle ended up plowing into the back of Murphy's left leg.
The biggest blow was the injury to Murphy who tore his ACL and MCL and will miss the 2017 season. The 26-year-old recorded a career-high nine sacks in 2016, trailing only Ryan Kerrigan's 11 among Washington defenders. Preston Smith is the team's starter at outside linebacker, with Lynden Trail likely to see more playing time with Murphy out for the season.