The preseason is over, and that means crunch time has arrived for the Los Angeles Rams to decide their 53-man roster.Cutdown day is Sunday, and the Rams have a more straightforward roster than many teams after returning nearly every starter from last season’s NFC Championship Game loss, give or take a trio of big-name additions.However, the roster has also gotten bloated at a few positions, making it challenging to decide which players to keep and which to expose to waivers before building the 16-man practice squad.This season’s roster is a moving target, as the Rams are bracing for the potential of two starter suspensions, have a pair of roster locks currently working back from injuries and also have a former three-time NFL Defensive Player of the Year they could need to save a spot for.Three takeaways from Rams training campNate AtkinsQuarterback (3)In: Matthew Stafford, Stetson Bennett, Ty SimpsonOut: Matthew CaldwellThe Rams have made it clear they are keeping three quarterbacks again, and Bennett will likely take the backup role Jimmy Garoppolo held the past two seasons. That would set up Simpson to sit and learn as a rookie, which the Rams see as valuable given the position’s complexity.If Stafford were to suffer a significant injury, the Rams could consider calling Garoppolo, who is currently a free agent and has been contemplating retirement. If it’s a short-term injury, Bennett seems likely to be the replacement, but it’s not as settled a spot as it has been in recent seasons.The Rams like what they’ve seen out of Caldwell this training camp, and he should be one of their practice squad additions if he clears waivers as expected.Running back (3)In: Kyren Williams, Blake Corum, Ronnie RiversOut: Jordan Waters, Dean ConnorsThe Rams cleared up this position on Thursday by trading Jarquez Hunter to the Miami Dolphins for Tutu Atwell. They should roll with just three options to start the season, with Williams and Corum in a timeshare of carries and Rivers serving as a versatile special teams player who is adequate as a rusher, receiver and pass protector.Waters and Connors impressed this preseason and should be options for the practice squad if they aren’t claimed by other teams on waivers.Wide receiver (7)In: Puka Nacua, Davante Adams, Jordan Whittington, Konata Mumpfield, Xavier Smith, Tutu Atwell, CJ DanielsOut: Alex Bachman, Tru Edwards, Brennan Presley, Tyler ScottThe Rams made a surprising trade by re-acquiring Atwell in the deal that sent Hunter to the Dolphins. That addition adds a needed speed option and could cover a potential suspension of Nacua under the league’s personal conduct policy. Either way, Atwell, on a $1.075 million contract, is easier to treat as a luxury than when they did so last season with him on a $10 million deal.Whittington and Smith became roster locks when the Rams gave them steady special teams roles, and they’ve been impressed with the growth of Mumpfield in his second season, including as an option on special teams.Daniels has had a busy preseason and training camp but might struggle to see the field early with how many options the Rams have. The team also has to brace for potential load management and missed games for Adams, who still looks great but is 33 and managed several lower-body injuries last season.Tight end (5)In: Terrance Ferguson, Colby Parkinson, Tyler Higbee, Davis Allen, Max KlareOut: Mark Redman, Dan VillariThe Rams are leaning into three-tight end sets even more than last season, when they discovered it midseason and led the league in that usage by a wide margin. That helps explain the second-round selection of Klare, and this group is deep enough that he could see several healthy scratches — like Ferguson did last season — until the Rams have an injury.Ferguson should be a featured option after a year of learning the playbook and an offseason of trimming body weight and learning several different alignments, positions and route combinations. Allen missed time in training camp with a quad injury but should be ready to go by Week 1.Offensive line (10)In: Alaric Jackson, Steve Avila, Coleman Shelton, Kevin Dotson, Warren McClendon Jr., David Quessenberry, Justin Dedich, Beaux Limmer, Keagen Trost, Blake HanceOut: AJ Arcuri, Dylan McMahon, Bill Murray, Bryce Henderson, Wyatt Bowles, Austin BlaskeThe Rams would ideally proceed with nine offensive linemen, but injuries to Trost and Dedich have muddied the picture, as has a potential looming suspension for Jackson. It makes sense to create extra space at tackle, given the questions facing Jackson and Trost and the fact that Quessenberry is 36. Once those situations stabilize, Hance could depart to make room for a third center.Offensive line depth remains the biggest question mark for this team, given how strong the starters are and how one injury or suspension could create major risk for a 38-year-old pocket quarterback managing a degenerative back injury.Defensive line/outside linebacker (10)In: Myles Garrett, Kobie Turner, Poona Ford, Byron Young, Tim Keenan, Tyler Davis, Josaiah Stewart, Braden Fiske, Desjuan Johnson, Wesley BaileyOut: Ty Hamilton, Devean Deal, Tomon Fox, Darryl Peterson III, Payton Zdroik, Bill Norton, Jaxson Moi, Larrell MurchisonThis is such a deep and loaded group, and that’s before the Rams factor in a spot for a potential Aaron Donald return. If and when that happens, Johnson or Bailey likely gets the boot. Bailey is a wild card, as he flashed in ways few saw coming this preseason, and the Rams have to know they won’t get him back if they expose him to waivers.Inside linebacker (4)In: Nate Landman, Omar Speights, Grant Stuard, Shaun DolacOut: Nikhai Hill-Green, Elias Neal, Monty RiceThis was another fairly set group from the start of training camp. Landman established himself as a leader last season and earned a three-year, $22.5 million extension. Speights should start in base but will likely be subbed out on passing downs for lots of dime personnel. Stuard and Dolac will lead and be key players on the special teams coverage units.Cornerback (4)In: Trent McDuffie, Jaylen Watson, Emmanuel Forbes Jr., Josh WallaceOut: Cam Lampkin, Steven Gilmore, Nyzier Fourqurean, Al’zillion Hamilton, Alex JohnsonThe Rams overhauled this group in the offseason by acquiring McDuffie and Watson, and McDuffie’s All-Pro abilities at outside and nickel cornerback should add versatility. Forbes should be a better fit as a No. 3 outside option who sees playing time in dime personnel. Wallace has been training as an inside and outside cornerback in addition to safety work.Lampkin was a difficult cut, but the Rams are overly deep at the nickel spot, which is his primary position. This would be a spot they’d need to load up on through the practice squad.Safety (4)In: Quentin Lake, Kam Curl, Kam Kinchens, Jaylen McColloughOut: Alex CookThis is one of the Rams’ strongest position groups, so they didn’t have any spots to be won. Lake is a hybrid cornerback-safety who will be the team’s primary nickel corner. Expect to see Curl move to more spots this year after inking a three-year, $36 million extension. Kinchens has a chance to be a breakout player, with his ball skills behind this pass rush.Cook should be a player the Rams try to get back on the practice squad, given his strong preseason and connection to defensive backs coach Jimmy Lake.Specialists (3)In: Harrison Mevis, Ethan Evans, Joe CardonaInternational pathway player: Jack BouwmeesterFor all of last season’s woes on special teams, these positions were set with few worries through training camp. Mevis locked the kicking role down with his performance last season, when he made 18 of 19 field goals and a game winner in the divisional round against the Chicago Bears.Evans had a strong start to last season, and the Rams hope they’ve tightened the coverage and blocking units to bring more out of him. Cardona began his career under new coordinator Bubba Ventrone in New England and brings 11 years of experience.