Explaining why he traded backup quarterback Tim Rattay to the Buccaneers last month, 49ers coach Mike Nolan said, "We're carrying four quarterbacks, and I really like our fourth, Cody Pickett." Now we know why. A 2004 seventh-rounder out of Washington, Pickett (right) has mostly bided his time in San Francisco as a special teams kamikaze. In the fourth quarter on Sunday against Tampa Bay, he was pressed into QB duty after Ken Dorsey (who was playing in place of injured rookie Alex Smith) sprained his left ankle. Pickett drove the Niners to an insurance field goal in a 15-10 upset win.... A month ago NFLPA czar Gene Upshaw said he was optimistic a new collective bargaining agreement could be reached this season, but now "we're not any closer than we were in April," a frustrated Upshaw says. The players want at least 61% of all football revenue; the owners are offering around 57%. The current CBA runs out after the 2007 season.... Rams coach Mike Martz, out the rest of the season with a bacterial heart infection, wants to return to the sideline, but only as a head coach. That won't be in St. Louis. Too many bridges burned, on both sides.