Joe Flacco and Robert Griffin III are both warming up on the field 90-plus minutes before kickoff. Lamar Jackson, as usual, is getting ready in the locker room.

Ravens QB Robert Griffin III, WR Jordan Lasley, OLB Tim Williams, G Alex Lewis, RB Ty Montgomery, DL Zach Sieler and FB/DL Patrick Ricard are inactive today against Tampa BAy.

Also good news for the Ravens that cornerbacks Marlon Humphrey and Tavon Young are healthy enough to play. Safety Tony Jefferson is back, too, after missing the past two games.

With a win today, the Ravens' playoff chances improve to ~61 percent, according to the @UpshotNYT playoff simulator. With a win and a Steelers loss, they're even better: ~71 percent. With a loss and a Steelers win, they fall to ~20 percent.

It's not a make-or-break Sunday for the AFC’s four 7-6 teams -- the Ravens included -- but every defeat leaves a little less margin for error. Here's your Week 15 rooting guide: bsun.md/2ExgKvd

Michael Pierce, Willie Snead IV, Tavon Young and Sam Koch are at midfield for the coin flip. The Ravens win the toss and will defer.

Two former Ravens red-headed centers at the game today: Ryan Jensen AND Matt Birk. #proudginger

C.J. Mosley gets his first sack of the season (it's a half-sack), and the Ravens will take over after a touchback.

Ravens running the wishbone, funny looking in the NFL

Hayden Hurst just caught an eight yard pass. I forgot he was even on the roster.

How did Weddle just miss that interception? That's a gimmie.

Ravens force a three-and-out themselves, and Tony Jefferson flexes after the stop. Defense is happy to have him back in there.

Ravens are fortunate Bucs can't catch on offense and defense or they might be down by 14-0 already.

Peyton Barber is not related to Tiki Barber. Because I know you were wondering.

Marlon Humphrey out here playing like Ronnie Lott. His aggressiveness is an underrated part of his game. Not a finesse player.

Lamar Jackson couldn't handle the snap, and the Bucs recover a fumble at their 49. Unfortunately for the Ravens, Jackson's been good for an aborted handoff seemingly every game.

Back shoulder fades could be open all day for Tampa Bay. Evans is a big receiver who doesn't get much separation but he can go get the ball.

Chris Wormley just hobbled off the field. Ravens already without Michael Pierce.

Bucs punch it in from a yard out. They have 61 rushing yards already. They average only 98.7.

Bucs botch the PAT snap, and their lead's only 6-0. Mistakes like that tend to linger.

Bradley Bozeman is in for a struggling James Hurst at left guard. Not sure if there's an injury involved.