UNDATED (AP) -- If the San Francisco 49ers have a quarterback controversy, they'll take it. Colin Kaepernick (KA'-pur-nihk) improved to 2-0 in relief of Alex Smith by guiding the Niners past New Orleans 31-21. Kaepernick completed 16 of 25 for 231 yards and a TD. He also ran for 27 yards.
Ahmad Brooks and Donte Whitner returned interceptions for touchdowns, the 49ers sacked Drew Brees five times as the Saints' three-game winning streak ended. New Orleans is 5-6. The Niners improved to 8-2-1.
The Baltimore Ravens rallied from a 13-3 deficit midway through the fourth quarter to beat San Diego 16-3 on Justin Tucker's 38-yard field goal with 1:07 left in overtime. The big play came when the Ravens converted on fourth-and-29 from their 37 when Ray Rice caught a short pass from Joe Flacco and weaved through the defense to the San Diego 33 with 1:37 to play. After a review, the ball was moved back to the 34 and the refs measured. The new spot gave the Ravens a first down by the length of the ball.
Baltimore has a three-game lead atop AFC North with a 9-2 mark. San Diego fell to 4-7.
No NFL rookie since 1960 and no Rams rookie ever accomplished what cornerback Janoris Jenkins did on Sunday.
The second-round draft pick with off-the-field issues through his college career returned two interceptions for touchdowns and St. Louis dominated the second half to hand the Arizona Cardinals their seventh loss in a row, 31-17 on Sunday.
Arizona rookie Ryan Lindley was intercepted four times in his first NFL start. The Cardinals are 4-7 following their 4-0 start.
The Atlanta Falcons needed another fourth-quarter comeback to run their record to an NFC-best 10-1.
Michael Turner ran for a pair of touchdowns, including a go-ahead, three-yard burst with 7:55 remaining to help the Falcons beat Tampa Bay 24-23.
Matt Ryan threw for 353 yards and overcame two critical turnovers by leading another late touchdown drive. Ryan teamed with Julio Jones on an 80-yard TD midway to put Atlanta ahead 17-13 midway through the third quarter. But the Bucs regained the lead on Doug Martin's second one-yard touchdown of the game before Ryan's fumble set up a field goal with 10:28 remaining.
Martin was held to 50 yards on 21 carries as the Buccaneers ended a four-game winning streak and dropped to 6-5.
Jay Cutler was back under center for the Chicago Bears after a one-game absence due to a concussion. Cutler threw for 188 yards and a touchdown as the Bears clobbered Minnesota 28-10. Brandon Marshall caught 18 passes for 108 yards and became the first Bears receiver since Marty Booker in 2002 to go over 1,000 yards.
Henry Melton sacked Christian Ponder on the first play from scrimmage, Nick Roach forced a fumble to set up Chicago's first TD, Chris Conte's 35-yard interception return set up another touchdown and Julius Peppers blocked a field goal. The defensive gems helped the 8-3 Bears temporarily move a half-game ahead of Green Bay for the NFC North lead, pending the outcome of the Packers' game at the New York Giants later today.
Ponder was 22-of-43 for 159 yards and a touchdown as the Vikings fell two games off the NFC North lead.
Peyton Manning and the Denver Broncos picked up their sixth straight victory with a 17-9 win at Kansas City. Manning threw for 285 yards and two touchdowns while the Broncos kept the Chiefs out of the end zone. Jacob Tamme and Demaryius Thomas each had touchdown catches for the 8-3 Broncos. Knowshon Moreno added 85 yards rushing in place of Willie McGahee (mih-GAY'-hee), who went on injured reserve last week with a knee injury.
The Chiefs fell to 1-10 despite Jamaal Charles, who rushed for 107 yards.
Manning's old team is 7-4. T.Y. Hilton became the first player in Colts history to score touchdowns on a reception and a kick return in the same game, leading Indianapolis to a 20-13 win over Buffalo. Hilton put the Colts ahead to stay by bringing back a punt 75 yards for a score five minutes into the contest.
Rookie Andrew Luck completed 20 of his 37 throws for 240 yards and a touchdown while going over 3,000 passing yards for the season.
C.J. Spiller had 107 yards on 14 carries for the 4-7 Bills.
The Colts now have sole possession of the AFC's first wild-card berth following Pittsburgh's 20-13 loss at Cleveland. The Steelers had eight turnovers on five fumbles and three interceptions.
Steelers running back Chris Rainey scored a go-ahead touchdown just before halftime, but he also committed a costly fumble with 2:25 remaining. Third-string quarterback Charlie Batch had 199 passing yards and three picks as the Steelers dropped to 6-5.
Trent Richardson ran for 85 yards, including the go-ahead touchdown on a 15-yard scamper in the third quarter for the 3-8 Browns.
Miami beat Seattle 24-21 on Dan Carpenter's 43-yard field goal on the game's final play. Ryan Tannehill engineered a six-play, 65-yard drive to set up Carpenter's kick. Tannehill was 18-of-26 for 253 yards and a touchdown as the 5-6 Dolphins ended a three-game skid. Tannehill also broke Miami's rookie record of 2,210 passing yards set by Dan Marino 29 years ago.
Leon Washington returned a kickoff for a touchdown to put the Seahawks ahead 21-14 with eight minutes left. Russell Wilson threw for 224 yards and two scores for the 6-5 Seahawks.
The Cincinnati Bengals' current quarterback outplayed their former QB in a 34-10 thrashing of the Oakland Raiders. Andy Dalton threw for three touchdowns and was 16 of 30 for 210 yards. Meanwhile, Carson Palmer was sacked four times while completing 19 of his 34 passes for 146 yards and an interception.
BenJarvus Green-Ellis ran for 129 yards and a touchdown for the 6-5 Bengals, who have a three-game winning streak after dealing the Raiders their fourth straight loss.
The 3-8 Raiders have surrendered 169 points during their losing skid.
And Jacksonville was a 24-19 winner over Tennessee behind Chad Henne's (HEH'-neez) two touchdown passes. Henne hit Cecil Shorts III for a 59-yard touchdown in the third quarter and hooked up with rookie Justin Blackmon for a 7-yard score in the fourth.
Henne completed 17 of 26 passes for 261 yards as the 2-9 Jaguars ended a seven-game losing streak.
Locker completed 23 of 40 passes for 262 yards, with a touchdown and an interception for the 4-7 Titans.