Since the BCS rankings are what truly matter from here on out, we will use those rankings when writing up these weekly updates.
The Arizona Wildcats (5-1, 2-1 Pac-10) are ranked 18 in the BCS poll, but they are bound to move up after this week if they are able to beat the Washington Huskies (3-3, 2-1 Pac-10). Beating Washington will be no small feat, as the Huskies have already knocked off two ranked foes this season ( at then-18 USC and in Seattle against then-24 Oregon State).
Wisconsin and Iowa, ranked 13th and 15th respectively, will clash on Saturday and #14 Nebraska plays #16 Oklahoma State in Stillwater.
The losers of both of those games will drop below the Wildcats, and with #17 Florida State taking the week off, the Wildcats might be able to rise 3 spots based on gravity alone.
It goes without saying that Arizona needs to take care of what is in its control - the game on its schedule. The Wildcats will go to a BCS bowl if they can win out, and that should be their only focus.
Check out Arizona Desert Swarm for UA blog coverage.