Jones (hamstring) has been ruled out for Sunday's game against Philadelphia, Ryan O'Halloran of The Florida Times-Union reports.
Jones signed a contract with the Jaguars on Tuesday and was a limited practice participant in each of the next three days while tending to a lingering hamstring injury. He's not quite ready to make his team debut, but his next chance to do so is Week 6 against the Texans on Sunday, Oct. 18.