Posted by ESPN.com's Ted Miller

What did we learn from Week 6 of Pac-10 action?

1. Things might get messy: Follow along. Stanford dumped Washington. Arizona beat Oregon State. Oregon State whipped Stanford. Washington beat Arizona. No, football is not logical or suitable for mathematical equations. It appears the Pac-10 is nine teams deep in quality, which means every game may be an adventure. Oregon and USC are clearly in the top tier. The other seven are sort of scrambling around. Will that scrambling lead to dilution and a perception of mediocrity? Or will a couple of those scrambling teams rise and win eight or nine games?

2. The Beavers are back, and so is Jacquizz: Oregon State apparently is in a hurry this year. Instead of waiting on a 2-3 start before turning things around, it has righted things after going 2-2. First, the Beavers won at Arizona State for the first time in 40 years. Then, on Saturday, they buried the conference's hottest team -- Stanford -- 38-28 in a game that wasn't nearly as close as the final score. Jacquizz Rodgers rushed for a career-high 189 yards and caught five passes for 82 yards. His four touchdowns give him 13 on the season, which is second in the nation.

3. No reason to doubt the Ducks' D any longer: Oregon has surrendered 19 points in its first three Pac-10 games, but 10 of those points aren't attributable to an opposing offense's success. So that means conference foes are scoring three points a game against the Ducks. Oregon had five sacks and two interceptions -- one of which was returned for a TD -- in its win over UCLA, despite being down three starters in the secondary.

4. Stanford has not yet arrived: The talk of national rankings and potentially challenging for a top spot in the conference disappeared for Stanford when the Cardinal found itself staring at a scoreboard that had them trailing Oregon State 31-7 in the first half Saturday. Stanford was out of sync from the first play, when wide-open receiver Chris Owusu dropped a sure touchdown pass. The defense was on its heels trying to stop Rodgers, and the offense didn't find its rhythm until the score was out of hand. Stanford has improved, but it still has a way to go.

5. It ain't over 'til it's over: Every play matters and a team with a lead can never let up. Just like a team that's behind should never stop playing hard until the final bell sounds. Arizona's loss at Washington should be exhibit A for that. The Wildcats dominated the game and led by 12 with just over four minutes left. It surely wouldn't matter that four times they settled for field goals deep in Huskies territory, right? But a stupid penalty here and a bizarre play there, and resurgent Washington prevailed while the Wildcats blew their shot at a national ranking.