EAST RUTHEFORD, N.J. (ESPNNewYork.com) - The pain in Shawn Andrews' injured back flared up late Wednesday night. It hadn't subsided by the time he showed up at the New York Giants' practice facility on Thursday morning, so the team sent him to the hospital.
The 27-year-old offensive tackle remained in the hospital on Friday afternoon and is listed as doubtful for Sunday's home game against Jacksonville.
Andrews' ailment is the latest in a rash of injuries to the Giants offensive line.
"He experienced so much discomfort that he was having trouble sleeping. That affected him. So they tried to relieve the tension," Tom Coughlin said on Friday afternoon.
It's unclear what treatment Andrews was receiving, but on Friday afternoon he posted on his Twitter account: "That's a verrrry uncomfortable feeling having needles stuck 7 inches deep into your back! Not as bad as being cut open, but still rough."
Andrews practiced on a limited basis on Wednesday before feeling the pain in his back.
The 27-year-old former Philadelphia Eagle previously underwent two back surgeries that kept him sidelined for nearly two seasons.
He needed an epidural last week to play in the Giants' game against the Eagles, his third straight start at tackle. Coughlin said the epidural was not the source of his latest flare-up.
Offensive coordinator Kevin Gilbride said Andrews had "performed tremendously" in place of Diehl.