New York Giants defender Jackson Dart remains in concussion protocol and will not play in Sunday's game against Detroit LionsInterim coach Mike Kafka told reporters Friday.
Jameis Winston will make his second straight start without Dart, with Russell Wilson serving as the backup.
Dart returned to practice Wednesday and Thursday as a limited participant but did not make enough progress to be considered ready to play.
“It’s only on the record. He is working on this stage,” Kafka said. “Based on testing and results, we are declaring him out this week.”
Dart left the Giants' game against the Giants. Chicago Bears November 9 after receiving a blow to the head and then missing the game against Green Bay Packers. He has been evaluated for concussions four times this season, including the preseason, while employing an aggressive rushing style that has made him one of the NFL's top running backs, rushing for 317 yards and seven touchdowns while averaging 5.6 yards per carry.
Winston was 19 of 29 for 201 passing yards with a rushing touchdown and an interception in a 27-20 loss to the Packers that dropped the Giants to 2-9 on the season.
ESPN's Jordan Raanan and The Associated Press contributed to this report.
