Don Banks explained the 10 most compelling quarterback situations heading into the 2010 season. Showing how much up-in-the-air the NFC West is, all four division teams made the list.

The Seattle Seahawks are No. 5 with incumbent Matt Hasselbeck leading Charlie Whitehurst and Mike Teel. Banks said Seattle’s trade for Whitehurst “added an element of competition to Seattle’s quarterback situation that didn’t exist when Seneca Wallace was the backup.”

So things might get interesting. Of course, Whitehurst has never thrown a regular-season pass, so it’s uncertain how he would look in live action.

The Arizona Cardinals came in at No. 2, with Matt Leinart likely taking over for retired Kurt Warner.

The St. Louis Rams are No. 9 with rookie Sam Bradford likely taking the reins. The San Francisco 49ers are No. 10 as Alex Smith tries to hold off David Carr.