SANTA CLARA - If the 49ers were worried about A.J. Jenkins entering Friday's game in Kansas City, his performance against Sean Smith, one of the league's biggest, most physical cornerbacks, triple underscored those doubts with a bright red marker.Jon Baldwin
This site is neither endorsed, nor sponsored by, nor affiliated with San Francisco 49ers or NFL Properties LLC. 49ers is a registered trademark of the San Francisco 49ers LLC. All teams and players mentioned are registered trademarks of the NFL and its respective teams. The use of any team names, words, trademarks, logos or photos have been used for descriptive purposes only. The content and information from other sites is the property of their respective owners. Player and team photos used with permission from USA TODAY Sports Images.