The New York Giants suffered their first serious injury of the 2011 training camp during Thursday evening's practice when Bruce Johnson went down with a season-ending ruptured Achilles Tendon.

Johnson, a 25-year-old cornerback, played in all 16 games for the Giants in 2009 after making the team as an undrafted free agent. He played six gamaes last season before going on injured reserve with a knee injury. He has 61 tackles and two interceptions during his Giants career.

The injury apparently happened during defensive drills, with the defense on the field farthest away from reporters. Johnson was competing for a roster spot in what is really a crowded secondary.

Devin Thomas sat our practice after rolling an ankle Wednesday night, and Domenik Hixon did not practice as a precaution as he recovers from knee surgery.

I will be back in the morning with a complete practice report.