Kenneth K. Lam / Baltimore SunThe Ravens' Kaelin Clay warms up fielding punts before game against the Rams at M & T Bank Stadium.
Kenneth K. Lam / Baltimore SunRavens' Crockett Gillmore (#80), center, runs for 46 yards on a short pass by Joe Flacco before he is tackled by Rams' Rodney McLeod, right, in the fourth quarter.
Kenneth K. Lam / Baltimore SunRavens' Courtney Upshaw, right, recovers a fumble by Rams runningback Todd Gurley in the fourth quarter. The Ravens defeated the Rams by score of 16 to 13 at M & T Bank Stadium.
Gail Burton / Associated PressA Baltimore Ravens fans watches the team warm up before a game against the St. Louis Rams.
Patrick Smith / Getty ImagesRunning back Justin Forsett #29 of the Baltimore Ravens is helped off of the field after an injury in the first quarter against the St. Louis Rams at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Patrick Smith / Getty ImagesTight end Crockett Gillmore #80 of the Baltimore Ravens stiff arms strong safety T.J. McDonald #25 of the St. Louis Rams in the first quarter at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Rob Carr / Getty ImagesWes Welker #19 of the St. Louis Rams carries the ball past Tray Walker #25 of the Baltimore Ravens in the first quarter at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Nick Wass / Associated PressRavens quarterback Joe Flacco warms up before a game against the St. Louis Rams.
Kenneth K. Lam/Baltimore SunRavens runningback Justin Forsett gains 18 yards on a run before being stopped by Rams' Rodney McLeod, left, and T. J. McDonald, right, in the first quarrter.
Nick Wass / Associated PressSt. Louis Rams quarterback Case Keenum warms up before a game against the Ravens.
Patrick Smith / Getty ImagesRunning back Todd Gurley #30 of the St. Louis Rams score a first quarter touchdown past inside linebacker Daryl Smith #51 of the Baltimore Ravens at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Patrick Smith / Getty ImagesRunning back Justin Forsett #29 of the Baltimore Ravens rushes against cornerback Trumaine Johnson #22 of the St. Louis Rams and defensive tackle Aaron Donald #99 of the St. Louis Rams in the first quarter at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Rob Carr / Getty ImagesQuarterback Joe Flacco #5 of the Baltimore Ravens looks on in the first quarter against the St. Louis Rams at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Nick Wass / Associated PressBaltimore Ravens tight end Crockett Gillmore (80) is chased down by St. Louis Rams strong safety T.J. McDonald (25) during the first half of an NFL football game in Baltimore, Sunday, Nov. 22, 2015.
Patrick Smith / Getty ImagesWide receiver Bradley Marquez #15 of the St. Louis Rams carries the ball while strong safety Will Hill #33 of the Baltimore Ravens defends in the second quarter at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Nick Wass / Associated PressThe Baltimore Ravens cheerleaders perform during the first half of an NFL football game against the St. Louis Rams in Baltimore, Sunday, Nov. 22, 2015.
Rob Carr / Getty ImagesTight end Crockett Gillmore #80 of the Baltimore Ravens carries the ball against cornerback Janoris Jenkins #21 of the St. Louis Rams and strong safety T.J. McDonald #25 of the St. Louis Rams in the first quarter at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Patrick Smith / Getty ImagesQuarterback Joe Flacco #5 of the Baltimore Ravens throws the ball while under pressure from defensive end Matt Longacre #96 of the St. Louis Rams in the second quarter at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Kenneth K. Lam / Baltimore SunRavens kicker Justin Tucker, right, celebrates with holder Sam Koch after game-winning 47-yards field goal. The Ravens defeated the Rams by score of 16 to 13 at M & T Bank Stadium.
Gail Burton / Associated PressSt. Louis Rams cornerback Trumaine Johnson warms up before a game against the Ravens.
Rob Carr / Getty ImagesCornerback Jimmy Smith #22 of the Baltimore Ravens pushes wide receiver Tavon Austin #11 of the St. Louis Rams in the first quarter at M&T Bank Stadium on November 22, 2015 in Baltimore.
Patrick Smith / Getty ImagesHead coach John Harbaugh of the Baltimore Ravens reacts after a play against the St. Louis Rams in the second quarter at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Patrick Semansky / Associated PressSt. Louis Rams offensive tackle Andrew Donnal (64) is carried off the field after an injury during the first half of an NFL football game against the Baltimore Ravens in Baltimore, Sunday, Nov. 22, 2015.
Kenneth K. Lam / Baltimore SunRavens head coach John Harbaugh celebrates with fans at end of the game. The Ravens defeated the Rams by score of 16 to 13 at M & T Bank Stadium.
Nick Wass / Associated PressRavens quarterback Joe Flacco warms up before a game against the St. Louis Rams.
Kenneth K. Lam / Baltimore SunThe Ravens' Joe Flacco high-fives fans as he comes out for warm up before game against the Rams at M&T Bank Stadium on Nov. 22, 2015.
Patrick Smith / Getty ImagesRunning back Todd Gurley #30 of the St. Louis Rams rushes against inside linebacker Daryl Smith #51 of the Baltimore Ravens and outside linebacker Courtney Upshaw #91 of the Baltimore Ravens in the first quarter at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Kenneth K. Lam / Baltimore SunTwo Baltimore sports legends, the Orioles' Cal Ripkens Jr., left, and Ravens' Ed Reed, right, share laugh before Ravens game against the Rams at M & T Bank Stadium.
Kenneth K. Lam / Baltimore SunRavens runningback Javorius "Buck" Allen, left, runs away from rams' Janoris Jenkins, right, in the third quarter. The Ravens defeated the Rams by score of 16 to 13 at M & T Bank Stadium.
Rob Carr / Getty ImagesRunning back Justin Forsett of the Baltimore Ravens rushes against the St. Louis Rams while head coach John Harbaugh and linebacker Zach Orr (54) cheer on the sidelines in the first quarter at M&T Bank Stadium on Nov. 22, 2015.
Kenneth K. Lam / Baltimore SunRavens wide receiver Kamar Aiken, left, catches a three-yards pass in front of Rams' Marcus Roberson for a touchdown in the fourth quarter. The Ravens defeated the Rams by score of 16 to 13 at M & T Bank Stadium.
Kenneth K. Lam / Baltimore SunTwo Baltimore sports legends, the Orioles' Cal Ripkens Jr., left, and Ravens' Ed Reed, right, share laugh before Ravens game against the Rams at M & T Bank Stadium.
Kenneth K. Lam/Baltimore SunRavens runningback Justin Forsett, center, left the field with his right arm in a spline, and assisted by medical personel. The Ravens defeated the Rams by score of 16 to 13 at M & T Bank Stadium.
Patrick Semansky / Associated PressBaltimore Ravens cornerback Lardarius Webb (21) breaks up a pass intended for St. Louis Rams wide receiver Tavon Austin (11) during the first half of an NFL football game in Baltimore, Sunday, Nov. 22, 2015.
Kenneth K. Lam / Baltimore SunRavens' Brandon Williams, left, caused Rams' Todd Gurley to fumble the ball in the fourth quarter. The Ravens defeated the Rams by score of 16 to 13 at M & T Bank Stadium.
Patrick Semansky / Associated PressBaltimore Ravens wide receiver Jeremy Butler (17) breaks a tackle by St. Louis Rams cornerback Trumaine Johnson (22) during the first half of an NFL football game in Baltimore, Sunday, Nov. 22, 2015.
Kenneth K. Lam / Baltimore SunRavens' Anthony Levine Sr., center, signals a missed field goal attempt by Rams kicker Greg Zuerlein, right, with less than two minutes left in the fourth quarter. The Ravens defeated the Rams by score of 16 to 13 at M & T Bank Stadium.
Patrick Semansky / Associated PressSt. Louis Rams cornerback Lamarcus Joyner (20) stops Baltimore Ravens tight end Maxx Williams (87) during the first half of an NFL football game in Baltimore, Sunday, Nov. 22, 2015.
Kenneth K. Lam/Baltimore SunRavens runningback Justin Forsett, left, runs for 18 yards before being tackled by Rams' T. J. McDonald, right, in the first quarter. The Ravens defeated the Rams by score of 16 to 13 at M & T Bank Stadium.
Patrick Smith / Getty ImagesKicker Justin Tucker #9 of the Baltimore Ravens misses a first quarter field goal against the St. Louis Rams at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Rob Carr / Getty ImagesRunning back Todd Gurley #30 of the St. Louis Rams score a first quarter touchdown past inside linebacker Daryl Smith #51 of the Baltimore Ravens at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Patrick Semansky / Associated PressBaltimore Ravens quarterback Joe Flacco (5) turns out of the pocket during the first half of an NFL football game against the St. Louis Rams in Baltimore, Sunday, Nov. 22, 2015.
Patrick Smith / Getty ImagesFree safety Rodney McLeod #23 of the St. Louis Rams celebrates after kicker Justin Tucker #9 of the Baltimore Ravens misses a first quarter field goal at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Kenneth K. Lam / Baltimore SunRavens wide receiver Kamar Aiken, left, catches a three-yards pass in front of Rams' Marcus Roberson for a touchdown in the fourth quarter. The Ravens defeated the Rams by score of 16 to 13 at M & T Bank Stadium.
Nick Wass / Associated PressBaltimore Ravens running back Justin Forsett (29) is helped off the field after an injury during the first half of an NFL football game against the St. Louis Rams in Baltimore, Sunday, Nov. 22, 2015.
Rob Carr / Getty ImagesTight end Crockett Gillmore #80 of the Baltimore Ravens carries the ball against cornerback Janoris Jenkins #21 of the St. Louis Rams and strong safety T.J. McDonald #25 of the St. Louis Rams in the first quarter at M&T Bank Stadium on November 22, 2015 in Baltimore, Maryland.
Kenneth K. Lam / Baltimore SunRavens' Brandon Williams, left, and Zachary Orr, right, congratulate kicker Justin Tucker, center, after his game-winning 47-yards field goal. The Ravens defeated the Rams by score of 16 to 13 at M & T Bank Stadium.
Nick Wass / Associated PressBaltimore Ravens tight end Maxx Williams (87) carries the ball during the first half of an NFL football game against the St. Louis Rams in Baltimore, Sunday, Nov. 22, 2015.
Kenneth K. Lam / Baltimore Sun
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The Ravens' Kaelin Clay warms up fielding punts before game against the Rams at M & T Bank Stadium.
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Ravens running back Justin Forsett, after his best start to a game this season, broke his right arm when he was tackled by St. Louis Rams defensive tackle Aaron Donald and is out for the game.
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Forsett was down on the field under supervision of several members of the team’s medical staff, and walked off the field with an air cast on his right arm.
He had three carries for 31 yards before the carry in question, on which he lost five yards. He left the game with four carries for 26 yards, and now has 151 carries for 641 yards and two touchdowns on the season.
A Pro Bowl selection a season ago, Forsett has been the Ravens’ lead running back all year. Withs second-year running back Lorenzo Taliaferro already on injured reserve with a foot injury, the load for the remainder of Sunday’s game goes to rookies Buck Allen and Raheem Mostert.