Jay Cutler is nursing a hamstring injury, Jimmy Clausen has looked awful and David Fales has yet to appear in an NFL game.

Those are the three quarterbacks the winless Chicago Bears could throw at the Raiders (2-1) on Sunday.

Bears coach John Fox hasn’t given much indication of which way he’ll go. A lot will depend on Cutler’s progress and he returned to practice in a limited capacity Wednesday, a sign he could be ready to go on Sunday.

The Raiders are expecting they’ll face Cutler with coach Jack Del Rio going as far as to say “I’ll be shocked” if Cutler doesn’t start.

If healthy, Cutler gives the Bears their best shot. But if he’s slowed down by his hamstring injury, a pass rush that showed life with five sacks on Sunday – including two by Khalil Mack – could pose a problem.

“I think there’s a big difference between Jay Cutler and the other guys,” Del Rio said. “That’s not to slight them, but he’s a more accomplished player. Jay’s a good football player. He’s got tremendous arm talent. We want to make sure we’re prepared for him. I would expect him to go. If he doesn’t go, we’ll be prepared for the backups.”

Clausen has a passer rating of 58.8 and has averaged just 4.6 yards per attempt since replacing Cutler after he was injured in Week 2. He started Sunday’s loss to the Seattle Seahawks and the Bears punted on all 10 of their possessions. He was 9 of 17 for just 63 yards passing.

That’s not a surprise considering Clausen’s shaky track record, which began when Fox drafted him in the second round in 2010 while coaching the Carolina Panthers.

Clausen was the starter by the third week of that season, but in 13 games he threw for just 1,558 yards, three touchdowns and nine interceptions. The Panthers went 2-14 and took Cam Newton with the No. 1 overall pick in 2011 and Clausen didn’t take another NFL regular season snap until last season with the Bears.

But if Cutler can’t go, it’s likely to be Clausen again despite some cries in Chicago to give Fales a shot. The second-year player who starred for two seasons at San Jose State was elevated from the practice squad to the 53-man roster after Cutler’s injury, but isn’t expected to get a chance this week.

The Bears’ scenario has to make the Raiders feel even better about their situation with Derek Carr, who is already showing exactly the type of progress the Raiders want out of their second-year quarterback.

He’s had the first back-to-back 300-yard passing games of his career, just led Oakland to its first road win in 12 tries and that came a week after a home come-from-behind win over a Baltimore Ravens team that’s been a playoff regular.

Considering the Raiders produced a stinker in this year’s season opener – with Carr struggling before leaving the game with a hand injury – two straight strong performances have helped confirm the progress the Raiders thought they made entering this season.

“It’s huge,” Carr said. “You never know when those times are going to come, when it’s finally going to click for an offense. We’ve done some good things, but we have not met our standard. Our standard is higher. We have so much to clean up, myself included. We’re happy, but we’re not content.”