Mel Kiper Jr. is listing the St. Louis Rams and Arizona Cardinals among five NFL teams he thought enjoyed outstanding offseasons to this point.This comes a couple days after Matt Williamson gave "A" grades to the Cardinals and Seattle Seahawks for their offseason work. He gave the Rams a B-plus, and had the 49ers close behind with a solid "B" grade.Meanwhile, opportunistic bettors have been throwing cash at the Seahawks above all others, driving down their Super Bowl odds from 18-1 to 8-1 in short order.