BALTIMORE — The last time an unbeaten team came to Baltimore, the Ravens exposed the Denver Broncos as frauds.

Interrupting the Indianapolis Colts' bid to make NFL history won't be nearly as easy for the inconsistent Ravens, who are more concerned with keeping their playoff hopes alive.

"We've just got to win a football game. I don't care if it is the Colts or whoever," said wide receiver Derrick Mason, whose 5-4 team beat Denver, 30-7, on Nov. 1.

Indianapolis (9-0) has won six straight over Baltimore and 18 regular-season games in a row — tied for the second-longest run in NFL history behind New England's 21-game streak from 2006-08.

Peyton Manning, in seven regular-season games against Baltimore, has thrown for 1,974 yards and 16 touchdowns with only three interceptions. No other quarterback is close to that against a defense considered among the fiercest in the league.

"I don't really get into what happened in games past," Manning said. "The key is just trying to execute, trying to protect the ball."