Isringhausen has been out since Sept. 6 due to a herniated disc in his back that causes his right foot to feel tingly and numb. Collins said Isringhausen's foot was still feeling numbness and that he wouldn't pitch until it went away. The manager said the reliever was "very doubtful for the next four days."
Duda has been out since Wednesday with headaches and dizziness sustained when he crashed into the wall in St. Louis while pursuing a fly ball. Collins said he has not seen the results of Duda's MRI, but the right fielder will not play until the headaches subside, regardless of the test results.
"The doctors have told him until those subside it doesn't matter what the MRI says," Collins said. "Then he can start to resume some type of baseball activities, which means he really can't play yet until they do some things and see how he reacts to that."
Angel Pagan will sit out the first half of the Mets' day-night doubleheader Saturday due to a headache of his own, suffered when he hit himself in the head with his bat following through on a swing. Pagan is feeling better, though, and could play in the second game, pending doctors' approval.