Atlanta Falcons safety J.J. Wilcox has suffered a season-ending ACL injury, coach Dan Quinn confirmed Tuesday.
Wilcox suffered the injury on the first day of training camp Monday and had been scheduled to get a second opinion.
The 28-year-old veteran remained on the ground kneeling on his left knee after a play and didn't immediately get up when defensive backs Isaiah Oliver and Damontae Kazee came over to check on him. Both Kazee and strong safety Keanu Neal helped Wilcox off the field a little more than an hour into practice.