CLEVELAND — The Ravens defense entered Sunday with an injury-thinned secondary. It wasn’t long before their defensive line was hurt as well.

Backup defensive ends Brent Urban and Michael Pierce were ruled out of the first half of the game against the Cleveland Browns with a concussion and a calf injury, respectively. Starter Travis Jones entered the game at less than full strength, slowed by an ankle injury.

The Browns took advantage. Running backs Nick Chubb and Deonte Foreman entered halftime with a combined 12 carries for 54 yards (4.5 per carry) against a Ravens run defense that entered Week 8 as the best in the NFL.

ravens ailing cornerbacks Marlon Humphrey (knee) and Nate Wiggins (shoulder/illness) disabledbut they weren’t the only notable defensive absences on Sunday. Safety Marcus Willams, who struggled mightily in the first half of the season, didn’t appear to play a bit in the first half. He was sitting on the sidelines, helmet rarely in hand, watching the game with the team’s staff. Williams did not appear on the team’s injury report last week.

Ar’Darius Washington and Eddie Jackson started as the team’s primary deep safeties, with safety Kyle Hamilton playing significant time in the slot.