CINCINNATI -- In no particular order, here are six Cincinnati Bengals you'll want to pay attention to during Thursday night's preseason game against the Indianapolis Colts (7 p.m. ET).

QB Jason Campbell. Expect a heavy dose of the Bengals backup quarterbacks Thursday night as Cincinnati attempts to fulfill it's primary preseason objective: staying healthy. Of course, there have been injuries this preseason, and Campbell is among those who have gotten hurt. Still, the plan for the Bengals is to get to opening weekend with a fully healthy Andy Dalton. So don't be surprised if he's only in for one series with other starters. Campbell, who missed the Week 2 game against the Jets because of an elbow injury, will look to get extended action in his final tune-up before the regular season. The veteran is 13-for-29 for 130 yards in two games this preseason. He also has two touchdowns and two interceptions.

QB Tyler Wilson. Just like Campbell, the emphasis for Wilson will be to eliminate turnovers. The Bengals offense did an admirable job of that Sunday at Arizona. They didn't have a single interception or fumble. They retained possession, all while battling horrid field position all night. Wilson hasn't played since the Week 2 loss to the Jets after suffering a concussion late in that game. Now that he's been healthy enough to practice, look for extended action from Wilson, assuming he has been cleared to play. Not all of the players on concussion protocol this preseason have made it on the field. Offensive tackle Andre Smith still hasn't played despite practicing the past two weeks.

RB James Wilder Jr. With a battered and bruised running back group, the Bengals probably will turn to Wilder much earlier than they have at other points this preseason. Look for the undrafted rookie free agent to get heavy action in the second half as Cincinnati tries to save second-round draft pick Jeremy Hill's legs. He'll probably see extensive action in the first and second halves as the Bengals try to ease starter Giovani Bernard through a very non-taxing evening. Remember, the goal is to keep everyone healthy, particularly the starters. Since that is the case, Wilder ought to see significant action since Cedric Peerman, Rex Burkhead and BenJarvus Green-Ellis may be missing in action. All three were held out of Tuesday's practice, the only one the Bengals had this short week.

DT Christo Bilukidi. While I'm still not sure Bilukidi will end up earning a spot on the 53-man roster later this week, he's still a player worth paying attention to. Coaches have liked some of what they've seen out of the backup defensive lineman. He has helped contribute to the Bengals' pass rush when he has been in the games, even coming away with one sack through the first three preseason contests. He has three total tackles in his appearances. On Sunday, Bilukidi was on the field for 23 plays, one of the higher snap counts of the team's reserve linemen. This will be his last chance to prove where he belongs: on the 53-man roster, on the practice squad, or released for another team to grab.

DE Sam Montgomery. Like Bilukidi, Montgomery has spent the preseason lining up both at tackle and end as the team tries to test out places it could use him if he makes the team. Also like Bilukidi, I'm not high on Montgomery making the final roster, but he does have tools that could be useful for the Bengals' pass rush. A lineman who has stand-up end ability, Montgomery could give Cincinnati's defense an added dimension from its standard rushes. Dontay Moch also has some of that same playing style and ability. It will be interesting to see how both fare when the roster gets set Saturday.

LB Sean Porter. One of the more impressive players on the back of the depth chart, Porter has caught the coaches' attention now that he's had a chance to play. Placed on injured reserve all last year, the former Texas A&M standout is just now getting an opportunity to show what he can do. The fourth-round 2013 draft pick filled in for Vontaze Burfict in practices last week when the starting weakside linebacker was out sick. He also capped Sunday night's 19-13 win with a final-play interception. He could be a special-teams addition to this year's 53.