Lewis dislocated his left finger in the third quarter and Boller
sustained a mild concussion in the fourth of the Ravens' 22-16,
overtime loss to the Dolphins on Sunday. Neither player returned.
Rookie Troy Smith replaced Boller midway through the fourth
quarter, then drove the team 59 yards to the half-yard line with 8
seconds left. Coach Brian Billick decided against trying for the
winning touchdown on fourth down and forced overtime on Matt Stover's 18-yard field goal.
"It's very tough to go for all or nothing," Billick said.
Lewis, an eight-time Pro Bowl player, leads the injury-plagued Ravens in tackles this season.
The Ravens were already without cornerback Samari Rolle, who
missed his second consecutive game with a shoulder injury.
Information from The Associated Press was used in this report.