ARLINGTON, Texas — No. 3 in the nation? A possible two-time Heisman Trophy winner?

How about No. 3 in the South Division of the Big 12 Conference? Or No. 4 , No. 5 or No. 6?

And speculation about Sam Bradford winning a second Heisman in 2009 has been replaced with speculation over Bradford's availability the rest of the season.

That brutal reality faces Oklahoma's football team after the third-ranked Sooners were shocked Saturday night by No. 20 Brigham Young, 14-13, in a game that resembled how the Sooners have played the last game in recent seasons instead of their first.

At least OU doesn't have to wonder any longer how it would have fared this season if Bradford and tight end Jermaine Gresham had decided to leave early for the National Football League.

Gresham didn't suit up for the contest after injuring a knee last week in practice. Bradford joined him on the sideline after injuring the AC joint in his right shoulder with seven seconds left in the first half.

No one is certain at this point when OU's two All-Americans will play again. Or even if they will return this season.

Loyal OU fans undoubtedly will maintain the Sooners would have found a way to avoid the stunning loss to 22-point underdog BYU if Bradford had played the entire game. But realists would debate that point for one very logical reason — OU's offensive line.

Or, to be more precise, the inept play of the O-line.

If you listened to offensive coordinator Kevin Wilson recently, you figured the rebuilt line would have a coming out party in the Dallas Cowboys' new stadium. Instead, the $1.2 billion house that Dallas owner Jerry Jones built turned into a House of Horrors.

At OU's media day, a defiant Wilson said, "it's documented that everyone is concerned about our line. I'm not. At all."

Wilson better be more than concerned this Sunday morning. He ought to feel downright sick over what he saw last night from a unit that got thoroughly whipped and let frustration turn into numerous drive-killing penalties.

And here's the most distressing part: The only returning O-line starter, All-America tackle Trent Williams, played a key role in Bradford's injury. It was painfully obvious that the senior's switch from right to left tackle is still a work in progress after he allowed Coleby Clawson to blow past him untouched, giving the linebacker a wide-open path to Bradford.

Clawson's clean hit drove Bradford's right shoulder hard into the Cowboys Stadium turf, ending the Sooner junior's night and perhaps his season.

It's questionable if OU could have won with a healthy Bradford. With those four new starters in the offensive line and some young receivers playing like rookies, Bradford didn't come close to playing at the level that won him the college's game most prestigious individual award last season.

The aforementioned OU loyalist would point out the defense lived up to its preseason billing. No it didn't. Not really.

The defense got lucky when one sure BYU touchdown ended with a fumble in OU's end zone. And when the Sooner defenders were needed most, they couldn't stop BYU's 16-play, 78-yard drive that produced the game-winning touchdown with 3:03 left.

Like his 11th OU team, coach Bob Stoops' opening night was less than a smash hit.

OU entered the game with national-title hopes. But with Oklahoma State thumping Georgia and Baylor winning at Wake Forest, OU could be fighting Texas Tech and Texas A&M for fourth in the South Division unless a whole bunch of Sooners grow up and heal up in a hurry.