Saints lose second cornerback

ST. LOUIS -- The New Orleans Saints were without both starting cornerbacks after Tracy Porter was helped off the field with an apparent left knee injury in the third quarter of New Orleans' 28-23 win over the St. Louis Rams on Sunday.

Porter was hurt when he tripped over a teammate on a Rams' reception. After being helped to the sideline, he was carted off.

The unbeaten Saints opened the game without cornerback Jabari Greer, who has a groin injury. Safety Darren Sharper (knee) also was among the inactives.

Information from The Associated Press was used in this report.