The Kansas City Chiefs are displaying a defending champion's resilience.

The Kansas City Chiefs are displaying a defending champion's resilience.

The San Diego Chargers are being labeled as weak-minded, lacking intestinal fortitude and — yes — soft.

Sure, the Chargers are 4-2 and possess a one-game lead over the Chiefs (3-3) in the AFC West, but as quarterback Philip Rivers leads his team into always-tough Arrowhead Stadium for a Monday night game, rallying Kansas City is ready to push back.

The change in momentum actually started Sept. 25, as the Chiefs crossed midfield attempting to upset the host Chargers, only to have quarterback Matt Cassell force an ill-advised pass that Chargers safety Eric Weddle intercepted to preserve a 20-17 victory.

The Chiefs fell to 0-3 that day, yet they have found since how to adapt to season-ending injuries to key members of their 2010 division-title team: running back Jamaal Charles, tight end Tony Moeaki and defensive back Eric Berry.

Running back Jackie Battle has stepped in to run for 119 yards in an Oct. 9 victory at Indianapolis, when the Chiefs trailed, 24-7, and won, 28-24. Cassell has found receiver Dwayne Bowe for 496 yards and four touchdowns.

Now, the Chargers will work to pound running backs Ryan Mathews and Mike Tolbert at the league's 25th-ranked run defense.