Eric Berry credits Kansas City's 4-0 start to the "family feeling" that held everyone together during the hapless 2-14 season of 2012.

Maybe so. But after the host Chiefs pounded the winless New York Giants 31-7 on Sunday, it's obvious that importing a cool, savvy quarterback from San Francisco and bringing in a smart, no-nonsense coach from Philadelphia also had a lot to do with a rags-to-riches transformation.

Alex Smith, who lost his job last year with the 49ers, threw three touchdown passes, and Dexter McCluster returned a punt 89 yards for another score as the Chiefs joined the 1980 Detroit Lions as the only teams in modern league history to win two or fewer games one season, then rocket to a 4-0 start the next.

"To be honest, all we talked about all offseason was being 1-0," said Smith. "Just get the first one."

Did he ever dream of being 4-0?

"No, to answer your question."

The Giants, proud Super Bowl champions of the 2007 and 2011 seasons, are 0-4 for the first time since 1987, a mass of injury and disarray.

"It is disappointing," quarterback Eli Manning said. "The defense got us some turnovers and we weren't able to do anything with it. We are just not playing very well offensively."

Smith hit touchdown passes of 4, 2 and 35 yards and was 24 for 41 for 288 yards. He was intercepted twice and the Chiefs also lost a fumble, Kansas City's first turnovers in what might be turning into a magical season under first-year coach Andy Reid.

"I know they'll battle," said Reid, who spent the previous 14 seasons coaching the Eagles. "That's what I know. There are a lot of things I don't know, but I do know this: We're a tough bunch."

Steelers QB: We're No. 32

With the Pittsburgh Steelers off to their worst start in 45 years, quarterback Ben Roethlisberger isn't mincing words about where the team stacks up against the rest of the NFL.

"Right now, you could say we're the worst team in the league," he said after Pittsburgh fell 34-27 to the Minnesota Vikings at London's Wembley Stadium. "That hurts."

With Roethlisberger sacked five times and harassed all day by Jared Allen and the Vikings, the Steelers dropped to 0-4 -- their worst start since 1968 when they lost their first six games en route to a 2-11-1 record.

Roethlisberger, who has won two Super Bowls with Pittsburgh, acknowledged this is the lowest point of his career.

"We are in uncharted territory and the water is dangerous right now," he said. "It stings. I have to hope and believe we can turn it around."

  • L.C. Greenwood, the relentless defensive end who made up one quarter of Pittsburgh's "Steel Curtain" defense of the 1970s, has died. He was 67.

    The Allegheny County Medical Examiner's office said Greenwood died Sunday from undisclosed causes at UPMC Presbyterian Hospital in Pittsburgh.

    A six-time Pro Bowler and two-time All-Pro, Greenwood played for the Steelers from 1969-81, helping Pittsburgh win an unprecedented four Super Bowls in a six-year span.

    Another Manning record

    Peyton Manning broke the NFL record with his 24th career game with at least four touchdown throws Sunday against the Philadelphia Eagles.

    The Denver Broncos quarterback eclipsed Brett Favre's mark with his fourth TD pass late in the third quarter, a short toss to his newest target, Wes Welker. Manning hooked up with Welker for a score earlier in the game and also had two TD passes to Demaryius Thomas.

    Manning's 16 TD passes are the most in the first month of a season, besting the previous mark of 14 set by Don Meredith in 1966 and tied by Kurt Warner in 1999.

    Manning now has 16 touchdowns and no interceptions, tying the start of Cleveland's Milt Plum during the 1960 season.

    Injury report

    Titans quarterback Jake Locker was carted off the field and taken to the hospital by ambulance after hurting his right hip early in the third quarter against the New York Jets. Titans coach Mike Munchak said the team did not know the extent of the injury.

  • Jets wide receiver Stephen Hill didn't return after suffering a head injury on New York's opening series.

  • Seahawks defensive end Michael Bennett strained a muscle in his lower back against Houston. Texans linebacker Brian Cushing left with a concussion.

  • Lions cornerback Rashean Mathis left the game against the Bears because of a concussion and did not return.

  • Bills running back C.J. Spiller hurt his left ankle.

  • Chargers linebacker Dwight Freeney hurt a quad in the second quarter and didn't come back against Dallas.