Jason Sehorn's attempt to return to the New York Giants' lineup is going to be delayed about another 10 days because of a torn hamstring in his left leg.
The cornerback who missed all of last season with a serious knee injury had the tear detected Monday night after undergoing an MRI in New York.
It is almost certain that Sehorn will miss the Giants preseason opener at Minnesota on Aug. 13.
"There are a few injuries, and the hamstring is one of them, you can't push it," Giants coach Jim Fassel said Tuesday after practice at the University at Albany. "You have to let it go. Some come back a little quicker, some are a little longer, but you cannot push it. If you do it will keep going and going and will never clear up."
One of the NFL's top cover cornerbacks, Sehorn injured the hamstring working out about three weeks before training camp opened. He didn't think it was serious then, but it cramped about a week before camp opened.
There have been some reports that the Giants were concerned that Sehorn did not work out with the team while rehabilitating his right knee, which he hurt in a preseason game against the Jets.
Fassel downplayed that report, saying he personally knows Marv Marinovich and Kevin McNair, the two men Sehorn hired to get him back into shape.
"I knew he was going to be pushed," Fassel said. "He didn't spend as much time as he could have on stretching. Jason loves to work out and he pushed it hard and pulled a hamstring."
Sehorn said his trainers reminded him to stretch, but he didn't.
"At the same time I worked my butt off, I put on a lot of muscle," Sehorn said. "The amount of time I put into stretching compared to the time I put in working out wasn't there. You put on 18 pounds, you need to stretch a little bit."
With Sehorn still sidelined, Conrad Hamilton and Phillippi Sparks continue to start at cornerback.
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