The New York Giants got lots of bad news on the injury front Tuesday, all of it coming on the defensive line. Martin Parker will undergo surgery for a herniated disc in his back and is done for the season. Shaun Rogers has a blood clot in his leg, the severity of which is uncertain. Marvin Austin is suffering from a bad back.

On top of these injuries, Chris Canty is still on PUP while he rehabs from offseason knee surgery and defensive end Justin Trattou is likely several weeks away as he is experiencing heel issues.

The long-term impacts of the injuries to Rogers and Austin is unknown right now. The door, however, would appear to be wide open for defensive end Adrian Tracy and defensive tackle Dwayne Hendricks.

Tracy, a 2009 sixth-round pick, has been impressive during training camp. Hendricks also recently drew praise from head coach Tom Coughlin.

Both players may now be headed toward situations where they go from training camp curiosities to relied upon parts of the Giants' 2012 defense.