Editor’s note: This roster countdown will take a break for the weekend, resuming Monday and running through Wednesday ahead of training camp, which begins Thursday.

The countdown continues with Nos. 45-31, where we begin looking at some players who could be starters, and some who could be key players but will have to fight for a roster spot.

Ranking the Seahawks roster

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45. Defensive back Ugo Amadi

 Potential role in 2019: Backup safety, slot corner, returner.

Main competition: Akeem King, Kalan Reed.

Why he’s ranked here: Amadi, a fourth-round pick out of Oregon, spent most of the offseason working as a safety but is expected to get a long look at slot corner. He also will be tried as a returner. The Seahawks could use some depth at punt returner.

44. Guard Phil Haynes

Potential role in 2019: Backup at each guard position.

Main competition: Ethan Pocic, Jordan Simmons, Jordan Roos.

Why he’s ranked here: Haynes was placed on the Physically Unable to Perform list Wednesday when the rookies reported, so that might mean this ranking is a little high if the injury proves something that could knock him out for a while. But Haynes ended the offseason program by earning raves from coaches and teammates for his quick assimilation of the playbook — he spent a few practices working with the starters in the absence of injured veterans — giving reason to think he could earn a roster spot.

43. Offensive Jamarco Jones

 Potential role in 2019: Backup tackle.

Main competition: Elijah Nkansah.

Why he’s ranked here: Jones was an early training-camp standout last season before suffering an ankle injury that ended his season. He’s healthy and will compete to be a backup at both tackle spots. With George Fant assured a spot on the roster behind starters Duane Brown and Germain Ifedi, there may be a spot for only one more tackle on the 53-man roster.

42. Linebacker Cody Barton

Potential role in 2019: Backup middle linebacker.

Main competition: Austin Calitro.

Why he’s ranked here: Barton, taken in the second round out of Utah, can play either inside linebacker spot. He spent the offseason program working in the middle, where he is being groomed to be the backup to Bobby Wagner and maybe a replacement down the road.

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41. Defensive end Rasheem Green

Potential role in 2019: Starter or rotational player at defensive end.

Main competition: L.J. Collier, Quinton Jefferson, Branden Jackson.

Why he’s ranked here: A third-round pick in 2018, Green had a standout preseason and a disappointing regular season that wasn’t helped by an ankle injury. Green needs to show he can sustain the success he had in the preseason last year.

40. Offensive lineman Ethan Pocic

Potential role in 2019: Backup at every spot on the offensive line.

Main competition: Phil Haynes, Jordan Simmons, Joey Hunt.

Why he’s ranked here: Pocic, a second-round pick in 2017, is another player for whom 2019 looms as a vital season. He was a starter when 2018 began but lost his job because of injury and the emergence of the veteran guard duo of J.R. Sweezy and D.J. Fluker. Pocic has value in being able to play every offensive line position including center — Pocic, Joey Hunt and Justin Britt are the only centers listed on the roster — and that versatility may keep him around.

39. Receiver Gary Jennings

Potential role in 2019: Fourth or fifth receiver and in the regular rotation.

Main competition: Amara Darboh, Keenan Reynolds, John Ursua, Malik Turner.

Why he’s ranked here: The Seahawks didn’t see a lot out of Jennings in the offseason program as he was recovering from a hamstring injury. The team says it plans to use Jennings everywhere, but slot could end up being a natural fit.

38. Defensive tackle Al Woods

Potential role in 2019: Tackle specializing in playing on run downs.

Main competition: Jamie Meder, Demarcus Christmas.

Why he’s ranked here: Woods, a nine-year veteran, was brought in to add some veteran depth to a young tackle corps and to help the run defense.

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37. Safety Shalom Luani

Potential role in 2019: Backup at free and strong safety.

Main competition: Marquise Blair, Tedric Thompson, Lano Hill.

Why he’s ranked here: With injuries to several other safeties, Luani spent the offseason program often working as the starter at strong safety alongside Tedric Thompson. Until others get healthy and show they are worthy of the job, he can’t be discounted for earning a spot again this season.

36. Tight end Nick Vannett

Potential role in 2019: Regular in the tight end rotation.

Main competition: Jacob Hollister, Ed Dickson.

Why he’s ranked here: A third-round pick in 2016, Vannett had his best year in 2018, starting nine games. But the addition of Hollister adds some intrigue to how the tight-end position will shake out, especially since the Seahawks figure to keep only three.

35. Safety Marquise Blair

Potential role in 2019: Backup or starter at strong safety.

Main competition: Lano Hill, Tedric Thompson, Shalom Luani.

Why he’s ranked here: Blair, a second-round pick out of Utah, was expected to be given a shot to win playing time at strong safety. But he was hobbled by a hamstring injury late in the offseason program that lingered enough that he was placed on the Physically Unable to Perform list this week, which makes it harder to predict how quickly he’ll be able to contribute.

34. Linebacker/rush end Jacob Martin

Potential role in 2019: Rush end and strongside linebacker.

Main competition: Cassius Marsh, Barkevious Mingo.

Why he’s ranked here: Martin came on strong at the end of his rookie season with all three of his sacks and six of his eight quarterback hits in the final seven games of the season. He had a career-high four tackles in the playoff loss at Dallas. Listed as a linebacker last season, the Seahawks lists him as a defensive end, indicating they view him playing a rush-end role. But he could factor in at strongside linebacker if needed.

33. Linebacker Barkevious Mingo

Potential role in 2019: Starting or backup strongside linebacker, rotational pass rusher.

Main competition: Jacob Martin, Cassius Marsh, Shaquem Griffin.

Why he’s ranked here: Mingo was the team’s primary strongside linebacker last season. But that role this year figures to go to Mychal Kendricks. That, coupled with the fact the Seahawks could save $4.2 million releasing Mingo, makes him a potential salary-cap casualty. But Mingo was one of Seattle’s best special teams players last season — his 373 special-teams snaps were 94 more than anyone else — and the Seahawks seem to be trying to find a way to keep him around by saying they will use him more as a rush end this season. Seeing how well that works will be one of the many intriguing stories of camp.

32. Safety Tedric Thompson

Potential role in 2019: Starter or backup at free safety.

Main competition: Lano Hill, Marquise Blair, Shalom Luani, Ugo Amadi.

Why he’s ranked here: Several of the players listed above aren’t free safeties and aren’t direct competitors to Thompson. But in a way, all the safeties are competing against each other for playing time and roster spots as the only sure thing is that Bradley McDougald will start at free or strong, with the rest battling to show who would be the best to pair alongside him. Thompson has the most experience of any other safety on the roster with 10 starts last season.

31. Tight end Ed Dickson

Potential role in 2019: Starting tight end.

Main competition: Will Dissly, Nick Vannett, Jacob Hollister.

Why he’s ranked here: Dickson is another potential salary-cap casualty. The Seahawks could save $2.6 million by releasing him. But he turned in some big plays last season once he got healthy after missing the first six, including four catches in the playoff loss at Dallas. The Seahawks may want to keep him around as a steadying force.