Nationals' outfielder Elijah Dukes will miss 4-6 weeks of action after suffering a knee injury on Saturday night, according to USA Today.
Dukes tore cartilage and partially tore a tendon in his right knee while slamming into the left-field wall after catching a fly ball.
Dukes will have surgery on Monday.
Knee To Sideline Nats' Dukes 4-6 Weeks