The Cincinnati Bengals wrapped up a great regular season that sadly ended too soon in the postseason.

Now comes the time to focus of who will be back next year from this team that won 12 games and was a Super Bowl contender before Andy Dalton went down with a thumb injury. It won't be easy replicating that success, especially since Cincinnati is expected to lose offensive coordinator Hue Jackson, and potentially other current coaches, too.

But regardless of which coaches leave, games are ultimately won and lost by the players, and it won't be long until the Bengals must make some hard decisions regarding next year's roster. As of now, there are 15 players set to hit free agency in March, unless their contracts are extended between now and then.

The good news is, it could be worse as two of the Bengals' best players were previously set to be part of that group but were given contract extensions before and during the 2015 season. Pro Bowl receiver A.J. Green got a monster contract over the summer, and All-Pro tackle Andrew Whitworth got a one-year extension through 2016 at the start of the season.

Those two would have easily been the top free agents needing to be re-signed, but with them locked up, Cincinnati can focus on other players. Here's a quick look at the players currently set to hit free agency in March:

As you can see, there are some big names who could be leaving Cincinnati. It's not realistic to expect all of these players to get re-signed, but the Bengals must avoid losing too many of them if they want to make another run at the playoffs next season.

During Marvin Lewis' Monday afternoon press conference he expressed optimism regarding resigning many of the team's free agents saying he doesn't think there will be as much change as you may think. " I feel good about things," Lewis said. "I think the core is here. Positionally, we're in good shape."

He added that free agency and losing players is "part of the system" and that he expects most of the team's free agents want to be back with the team next year and that players like it in Cincinnati.

"The NFL system, it works," Lewis said. "Hopefully we can get you back here and you feel good about it."

Also, you'll see backup center T.J. Johnson is listed as an exclusive rights free agent. An ERFA is a veteran player with less than three accrued NFL seasons. These players are limited to either signing the contract tendered to him by his current team, or not playing in the NFL that season.

If a team chooses not to tender a contract to an ERFA, he becomes an unrestricted free agent. It's possible the Bengals tender Johnson and keep him as competition for an interior offensive line spot on next year's team.

Here is Pro Football Focus' look at all of the Bengals' free agents based on the number of snaps (on offense/defense only -- not including special teams) they played and their PFF grade in 2015:

Name 2015 PFF grade Position 2015 snaps Reggie Nelson 83.9 S 1,074 Marvin Jones 79 WR 925 Andre Smith Jr. 36.6 OT 907 Adam Jones 84.4 CB 871 Vincent Rey 43.7 LB 744 Leon Hall 79.7 CB 677 Mohamed Sanu 52.8 WR 661 George Iloka 82.6 S 654 Wallace Gilberry 69.4 ED 641 Emmanuel Lamur 39.7 LB 342 Pat Sims 66.4 ID 187 Brandon Thompson 51.9 ID 184 Eric Winston 48.9 OT 176 Brandon Tate 70.8 WR 9

As of now, 10 players who either started or played more than 300 snaps in 2015 will become free agents, including two starting corners, both starting safeties and two starting receivers who played at least 650 snaps each this past season.

The best player of the bunch this year was Adam Jones, who became one of the NFL's best corners and someone who Cincinnati could count on to hamstring opponents' best receivers. Depending on what the Bengals want to do with fellow starting corner Leon Hall and how they feel about a tandem of Darqueze Dennard and Dre Kirkpatrick going forward will determine if Jones is attempted to be re-signed. The Bengals' biggest free agent priorities are likely both Adam and Marvin Jones as well as Iloka.

The Bengals will likely pass on re-signing right tackle Andre Smith after drafting two tackles in the first two rounds of the 2015 NFL Draft, so him being back is a long-shot. In the locker room today, Smith apparently didn't want to talk but said, "everything will work out."

It's debatable whether 31-year-old Wallace Gilberry will be back after getting just 3.5 sacks over the past two seasons. If he is brought back, it shouldn't be for $2 million per season, like he made in 2015.

I'd expected Emmanuel Lamur to re-sign on a one-year 'prove it' type of deal after suffering a season-ending knee injury. Fellow linebacker Vincent Rey should also be brought back for what he's done for the Bengals on defense and special teams. He was the Bengals' leading tackler this season.

However the Bengals decide to use their cap space, they'll have a lot of it. Per Spotrac, Cincinnati is set to have $35 million in cap space this offseason, the ninth-most of any team. Hopefully, they'll use most of it to keep their own and nab a few quality free agents.