After each race of the IndyCar Series season, ESPN.com open-wheel correspondent John Oreovicz will rank the top 10 drivers in the series. Don't agree with Oreo's list? Let him -- and the whole world -- know in the Conversation section at the bottom of the page.

New this week
Will Power.

Dropped out
Paul Tracy.

Biggest movers
Scott Dixon gained two spots from third to first, Helio Castroneves from sixth to fourth.

Biggest losers
Justin Wilson fell three spots from fourth to seventh, Danica Patrick from fifth to eighth.

2009 IndyCar Series Power Rankings - Week 12
	RK(LW)	DRIVER	TOP 10s	COMMENT
	1 (3)	Scott Dixon	9	Dixon is back on top of the IndyCar Series standings and the Power Rankings. The Ganassi team was second-best to Team Penske at Edmonton, but Dixie solidly had the measure of his teammate and is poised for a championship shootout.
	2 (1)	Dario Franchitti	9	Having never raced there before, Franchitti knew that Edmonton probably would be his worst track of the season. A distant fifth-place finish was decent damage control, and he remains just three points behind his teammate as the IndyCar championship enters the homestretch.
	3 (2)	Ryan Briscoe	8	Briscoe broke his streak of second-place finishes but not in the way he intended by claiming fourth place at Edmonton. He lost yet another likely runner-up result by brushing the wall during the final stint but still lies just 14 points out of the championship lead.
	4 (6)	Helio Castroneves	7	Helio bounced back from a series of poor results with an aggressive second-place finish at Edmonton. But time is running out, and he'll need his teammate and the Ganassi boys to start faltering if he is to claim that elusive first series championship.
	5	Will Power	6	Even as a part-timer, Power's association with Team Penske has helped the taciturn Aussie raise his game to a new level. Hasn't finished worse than sixth in any race he has run in 2009 and has positioned himself to emerge as a future IndyCar star, with or without Penske.
	6 (7)	Marco Andretti	8	Despite a best finish of fourth place at Texas, Andretti has used consistency to elevate himself to sixth place in the IndyCar standings and the Power Rankings. But he wasn't popular post-Edmonton after trying perhaps too hard to avoid being lapped.
	7 (4)	Justin Wilson	4	Car-setup problems meant Wilson didn't fare as well at Edmonton as many predicted, but he still persevered to finish eighth. Needs to make the most of the year's final two road races to maintain his championship and Power Rankings standing.
	8 (5)	Danica Patrick	8	Off the pace again at Edmonton as Andretti Green Racing's woes continue. Patrick consistently finishes races but is starting to slip out of the top 10 on a regular basis.
	9 (8)	Graham Rahal	5	Unlike a year ago, avoided trouble at Edmonton and brought his Newman/Haas/Lanigan Racing entry home seventh. Not letting the frustration of not running up front get to him.
	10 (9)	Tony Kanaan	6	TK's summer of misery heated up in the wrong way with a scary pit fire at Edmonton. The IndyCar Series' iron man is unlikely to let burns to his hands and face force him to miss a race.