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The difference Peyton Manning has made in Denver actually is measurable.

Try from 8-8, which the Broncos were a year ago in winning the AFC West, to 12-3. Try losing their final three games of 2011 and sneaking into the back door of the playoffs to winning their last 11 and moving into the postseason as the NFL's best team.

Those are the numbers, along with Denver (No. 1 in the AP Pro32) being a 16-point favorite over Kansas City (No. 32, AP Pro32), which is 2-13. What Manning has brought to the Broncos in swagger, confidence and performance that has been impressive even by the four-time league MVP's standards.

Don't look for any temporary respite in any of those areas against the weak Chiefs. "We talk about that a lot, not coasting, pedal downhill," coach John Fox said. "I appreciate him. I think that's a big reason why he's accomplished what he's accomplished, whether it's here or in Indianapolis. He's a tremendous competitor, doesn't let up. I think that's how you need to be to be successful."

Few teams have been more successful this season than the Broncos. Kansas City has no chance Sunday. BRONCOS, 37-6 No. 20 Carolina (plus 4) at No. 16 New Orleans After this, Saints will be unburdened from bounties that damaged season.

BEST BET: SAINTS, 40-27 No. 31 Jacksonville (plus 5½ ) at No. 26 Tennessee As bad as Jaguars might be, Titans look worse right now. UPSET SPECIAL: JAGUARS, 17-13 No. 14 Dallas (plus 3½ ) at No. 9 Washington

NBC and NFL get their wish: tight game between archrivals to win division. REDSKINS, 29-27 No. 7 Houston (minus 6½ ) at No. 10 Indianapolis Texans never have won at Indy. They won't start now. COLTS, 27-24

No. 19 Miami (plus 11) at No. 4 New England Patriots playing for a bye, just might get it. PATRIOTS, 30-17 No. 3 Green Bay (minus 3) at No. 12 Minnesota Shouldn't be playing hunches so late in season. But ...

VIKINGS, 24-23 No. 27 Arizona (plus 15) at No. 6 San Francisco Minnesota's win gives 49ers shot at a bye. 49ERS, 30-9 No. 18 St. Louis (plus 10) at No. 5 Seattle Our ears still are ringing from the noise level at CenturyLink.

SEAHAWKS, 31-20 No. 8 Baltimore (plus 3) at No. 11 Cincinnati These teams could meet in wild-card round next week. RAVENS, 20-19 No. 29 Philadelphia (plus 9½ ) at No. 15 New York Giants Big last stand for Michael Vick and Andy Reid? Nah.

GIANTS, 24-13 No. 13 Chicago (minus 3) at No. 28 Detroit Reeling Bears still have playoff shot. Lions have packed it in. BEARS, 27-17 No. 24 New York Jets (plus 3) at No. 25 Buffalo Go with the losing team with less turmoil.

BILLS, 24-16 No. 23 Cleveland (OFF) at No. 17 Pittsburgh Strange not seeing Steelers in contention. Not strange with Browns. STEELERS, 17-13 No. 22 Tampa Bay (OFF) at No. 2 Atlanta Falcons won't have meaningful game for two more weeks.

FALCONS, 27-23 No. 30 Oakland (OFF) at No. 21 San Diego Norv Turner could be leaving with a two-game winning streak. CHARGERS, 30-10

2012 RECORD:

Against spread: 12-4 (105-118-7). Straight up: 13-3 (147-88-1)

Best Bet: 7-7-2 against spread, 11-5 straight up.

Upset special: 11-5 against spread, 9-7 straight up.