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.
The Eagles also released receiver Dave Ball, who has had a hamstring injury. The team has two spots to fill on their 90-man roster.