‘Coach Gregg Williams said a magnetic resonance imaging exam revealed that Cowart suffered a partial tear of his Achilles’ — the tendon at the back of the heel — while back-pedaling in pass coverage during the first quarter of Sunday’s 24-6 loss to the New Orleans Saints in the season opener. While Cowart will not require surgery at this time, he has been fitted with a walking cast and "he’s going to miss some significant time," said Williams, who would not give a specific time frame.’