They start arriving Sunday night and Monday in Portland. The 25th edition of the Portland Sea Dogs is almost official.

The Red Sox are expected to announce their minor league rosters Monday.

Based on the major league roster, as well as additions made in the offseason, we can guess who’s coming to Hadlock.

Looking for prospects? There are no sure-fire major leaguers (although Michael Chavis may stop by once he’s done rehabbing his strained oblique muscle).

We’ve been spoiled in recent years, with a Rafael Devers or an Andrew Benintendi or a Mookie Betts arriving at Hadlock, taking their cuts, then booking passage to Fenway Park.

This year there are solid players, and maybe a Tzu-Wei Lin in the bunch – Lin being the infielder who played 1½ seasons of unremarkable baseball at Hadlock before the switch came on last year, when he reached the majors.

The top Sea Dogs at the start of this season appear to be pitchers Mike Shawaryn and Travis Lakins and infielders Josh Ockimey and Chad De La Guerra.

All four are ranked among MLB.com’s list of Boston’s top 30 prospects. All but Lakins were invited to the Red Sox rookie development camp in January, and De La Guerra also received an invite to Boston’s major league spring-training camp.

Shawaryn, 23, was a fifth-round draft pick from the University of Maryland in 2016. After his sophomore year at Maryland (All-American with a 1.71 ERA), Shawaryn was expected to be drafted in the first or second round, but an average junior year (3.18 ERA) dropped him to the fifth round. In his first full pro season last year, he relied on his fastball/slider combo for a combined 8-7 record and 3.81 ERA for Greenville and Salem.

Ockimey, 22, has moved along quickly in the Red Sox system since being drafted out of high school in the fifth round in 2014. A strong first baseman, his potential as a power hitter makes him a prospect. Last year, he hit .275 with an .827 OPS and 11 home runs in 100 games with Salem, then .272/.799 with three homers in 31 games for Portland. This could be his breakout year.

De La Guerra, 25, was a 17th-round draft pick in 2015 out of little-known Grand Canyon University. A versatile infielder, he emerged last season, hitting .294/.832 in Salem. He then played 52 games in Portland (.270/.761). Boston is always looking for dependable utility players, and De La Guerra might fit the mold.

Lakins, 23, has a mix of fastball, curve, slider and change-up. But the results have been spotty for the sixth-round draft pick (2015) out of Ohio State. He recorded a 5.93 ERA in Salem in 2017 but impressed with a 2.61 ERA in seven starts last year. Promoted to Portland, Lakins struggled again (6.23 in eight starts).

CHAVIS WAS expected to be in Triple-A Pawtucket after his breakout 2017 (combined .282/.910, 31 home runs in Salem and Portland), but he suffered an oblique injury early in spring training. There’s no timetable for his return. When ready, he may stop in Portland on his way to Triple-A.

While Chavis is a third baseman, he did play some first base in the Arizona Fall League (since Boston seems set at third with Devers).

DANNY MARS was an all-star outfielder who led the Sea Dogs with a .304 average. But he could be back in Portland, considering the logjam in Pawtucket (Rusney Castillo, Aneury Tavarez, Jeremy Barfield and Steve Selsky). Plus, first baseman Sam Travis is supposed to get time in left field. And veteran Sea Dogs outfielder Cole Sturgeon is also a Triple-A candidate after 2½ seasons in Portland.

MIKE OLT might be a welcomed returning player at first base or DH. Olt, 29, provided veteran leadership last year, along with 16 home runs.

FAMILIAR PITCHERS are expected back in Portland, including starters Teddy Stankiewicz, Kevin McAvoy, Trey Ball and Dedgar Jimenez and reliever Jake Cosart. One of those starters may go to the bullpen, but it won’t be Jimenez, 22, who was impressive after being promoted to Portland late last year. With an 89 mph fastball but a deceptive delivery, Jimenez was 5-0 with a 2.91 ERA in eight starts.

CATCHER JORDAN Procyshen should return. He may back up Austin Rei, a third-round draft pick in 2015. Rei, known for his defense, was invited to major league spring training.

FORMER SEA Dogs are popping up on different rosters. Bryce Brentz, who the Red Sox waived after signing J.D. Martinez, has bounced around. He was picked up by the Pirates, waived again and signed by the Mets. New York removed him from the 40-man roster, and after no team grabbed him on waivers, they assigned Brentz to Triple-A Las Vegas.

Outfielder Jeremy Hazelbaker, who reached the majors in 2016 with the Cardinals, signed with Arizona last year. He’s still on the 40-man roster, assigned to Triple-A.

The Diamondbacks recently released former Sea Dogs pitcher Taylor Grover.

OUTFIELDER TIM Tebow has been assigned to the Binghamton Rumble Ponies, the Mets’ Double-A team announced. That means the Sea Dogs will face him in their opener Thursday in Binghamton, then in Portland for the Sea Dogs’ first home series, April 13-15. About 1,000 tickets remain for each of the games.

Kevin Thomas can be reached at 791-7411 or:

kthomas@pressherald.com

Twitter: ClearTheBases