AP Pro Football Writer
Only three of the NFL's five unbeaten teams could make it to five wins.
Kansas City, New Orleans and Denver moved to 5-0 Sunday, while New England and Seattle finally lost.
The Chiefs' latest victory in their sensational turnaround came at Tennessee, a 26-17 win in which they blew a 13-0 halftime lead, then rallied.
"I am speechless right now," Jamaal Charles said after rushing for 108 yards, 50 in the fourth quarter, including a 1-yard run for the winning touchdown. "This team is very blessed to be 5-0 right now. Nobody expected us to be 5-0."
Not so surprising are the perfect starts by the Saints and Broncos. New Orleans hasn't lost since coach Sean Payton returned from his one-year bounty ban, with win No. 5 a 26-18 verdict at Chicago.
Tight end Jimmy Graham continued his torrid start with 10 catches for 135 yards in his fourth consecutive 100-yard game -- matching an NFL record for the position he already held with Tony Gonzalez.
"I'm just blessed to be with such a great quarterback and a guy who has so much trust in me," Graham said of Drew Brees, who had another superb day for his first win at Soldier Field after three defeats.
Denver won its 16th consecutive regular-season game, but it was the closest in that streak, and maybe the wildest: 51-48 at Dallas.
Peyton Manning maintained his record pace of touchdown passes to start the season and has 20. He threw for 414 yards and four scores to outlast Tony Romo's 506 yards.
"Thank God our offense kept us in the game all day long," Denver coach John Fox said.
New England lost 13-6 in the rain at Cincinnati to fall to 4-1. Seattle was outscored at Indianapolis 34-28.
Also Sunday, it was Baltimore 26, Miami 23; San Francisco 34, Houston 3; Oakland 27, San Diego 17; Green Bay 22, Detroit 9; Philadelphia 36, the New York Giants 21; and St. Louis 34, Jacksonville 20.
On Monday night, the New York Jets visit Atlanta. On Thursday night, Cleveland beat Buffalo 37-24.
Off this week were Minnesota and Washington, each 1-3, and Tampa Bay and Pittsburgh, both 0-4.
CHIEFS 26, TITANS 17
At Nashville, Charles put the Chiefs ahead to stay, and they intercepted Ryan Fitzpatrick twice in the final 6:14. Ryan Succop kicked four field goals, including a 48-yarder.
The Titans (3-2) missed starting quarterback Jake Locker (sprained right hip) early on, but Fitzpatrick guided them to 17 straight points in the second half.
"We are 5-0, and we're not ashamed of that," said Kansas City coach Andy Reid, whose hiring in January began the franchise's revival. "We also know that we've got a ton of room to improve and it's important that we continue to do that."
SAINTS 26, BEARS 18
At Chicago, Brees threw two touchdown passes to Pierre Thomas and was 29 of 35 for 288 yards in his first victory in four career games at Soldier Field. Garrett Hartley matched a career high with four field goals.
Jay Cutler threw for 358 yards and two touchdowns for Chicago (3-2), which has lost two in a row. Alshon Jeffery had 10 receptions for a franchise-record 218 yards.
"What I did out there, I'm more concerned about the 'W,' not about what I did," he said. "It's a team thing. It took 11 guys to get 200-plus yards or whatever I had."
BRONCOS 51, COWBOYS 48
The teams combined for 1,039 yards in the second-highest scoring game in regulation since the NFL-AFL merger in 1970, according to STATS. Cincinnati and Cleveland combined for 106 points in the Browns' 58-48 win in 2004.
Yet it took a big defensive play to decide it. Despite Romo's huge game, he was intercepted by a diving Danny Trevanthan inside the Dallas 30 to set up Matt Prater's winning 28-yard field goal.
Denver got nine receptions for 122 yards and two TDs from tight end Julius Thomas and even a 1-yard bootleg score by Manning that completely fooled host Dallas (2-3).
"The key is you want to do it about every five years or so," Manning said.
Denver has scored 103 points in two weeks and 230 this season.
Three Cowboys had more than 100 yards receiving: Jason Witten (seven for 121), Dez Bryant (six for 141) and rookie Terrance Williams (four for 151).
BENGALS 13, PATRIOTS 6
At Cincinnati, the elements and a staunch defense brought Tom Brady's streak of touchdown passes to a halt at 52 games.