THE WATERCOOLER

QUESTION: With the injuries mounting quickly at key positions, who must step up for the Rams right away for them to have any chance against San Francisco this weekend?

JIM THOMAS
The Rams absolutely, positively have to get their passing game going. That means Donnie Avery must step up, and Kyle Boller, too. On defense, it’s up to the front seven to keep Frank Gore’s replacement, Glen Coffee, from beating them on the ground.

BILL COATS
Here they are, in alphabetical order: Donnie Avery, Ron Bartell, Kyle Boller, Josh Brown, Keenan Burton, Craig Dahl, Steven Jackson, Donnie Jones, James Laurinaitis, Leonard Little, Chris Long and Randy McMichael. Seriously . . . the Rams will need to get solid outings from all their most vital performers. Their margin for error is razor-thin.

KATHLEEN NELSON
Keenan Burton. The 49ers will be keying on Steven Jackson, so a receiver will need to make a few plays to keep the defense honest. Burton has just six receptions and to this point has contributed less than the other 2008 draft choice, Donnie Avery. A big game from either would help loosen the 49ers’ defense, though.

KEVIN WHEELER (Host of “Sports Open Line” on KMOX)
There is no one person who needs to step up, at least in my mind, but there is a unit that needs to step up: the offensive line. The best chance the Rams have at winning this weekend in San Francisco is controlling the line of scrimmage and pounding the Niners with their best player, Steven Jackson. If they can’t run the ball — and do so with authority — the Rams won’t win.