911 call for secondary: Is there a CB in the draft?

Late in the second quarter of the Niners' 34-7 loss to San Diego on Thursday night, Chargers quarterback Philip Rivers spotted the mismatch -- wide receiver Vincent Jackson on linebacker Takeo Spikes -- and lofted a pass to Jackson for a much-too-easy 11-yard touchdown.After the game, Spikes didn't reveal whether he was supposed to receive help on the play. Instead, he focused on Rivers, who made the play happen."He just knows every defense has a weakness," Spikes said. "That's what he's good at."The weakness in the Niners' defense isn't hard to spot. And high-end quarterbacks such as Rivers have had an easy time picking apart their shaky secondary. San Francisco has faced four quarterbacks currently ranked among the NFL's top 10 in passer rating -- Rivers, New Orleans' Drew Brees, Kansas City's Matt Cassel and Green Bay's Aaron Rogers -- and that foursome has a 4-0 record while its teams have won by a combi...