Wide receiver Arrelious Benn tore the anterior cruciate ligament in his left knee, the Eagles said.
Benn is the third Eagles player to suffered a season-ending ACL injury this training camp. All three injuries -- wide receiver Jeremy Maclin and linebacker Jason Phillips went down first -- occurred on the same field at the Eagles practice facility.
Benn missed most of the first two weeks of camp with a knee injury. He returned Sunday and practiced only two full days before tearing his ACL. Benn has had an injury-marred NFL career.
The Eagles have now lost two receivers that they expected to be on their final 53-man roster. The team acquired Benn from Tampa Bay in the off-season for a sixth-round draft pick. They did get receiver Riley Cooper back on Tuesday after he missed three days because of an excused absence.