Before even completing his first full season in pro ball, Corey Rosier had already played for three different organizations as a result of being traded twice.

Rosier, a 12th-round selection of the Mariners in the 2021 draft out of UNC Greensboro, was one of two players traded by the M’s to the Padres for infielder Adam Frazier that November. A little more than eight months later, the young outfielder was dealt to the Red Sox alongside fellow minor-leaguer Max Ferguson and veteran first baseman Eric Hosmer in exchange for pitching prospect Jay Groome.

“I think it’s definitely cool to know I’m sought after and people see me fitting into their system somewhere,” Rosier told MassLive.com’s Christopher Smith back in April. “So that’s cool to know I’ve been a part of two big-league trades. So that’s the way I try to view it. Coming over in the middle of the season last year, it was a big transition.”

As he alluded to, Rosier struggled with High-A Greenville to close out the 2022 campaign, amassing a .547 OPS in 23 games. Despite the difficulties he endured there, though, the speedy 24-year-old broke camp this past spring with Double-A Portland and fared well in his first taste of life in the upper-minors.

“I think going through spring training with the Sox, getting more acclimated with the staff, getting comfortable,” Rosier said. “I think that’s really played a part in the early success that I’ve had in a small sample size.”

In his first 49 games with Portland in 2023, Rosier batted a stout .307/.354/.452 with 12 doubles, three triples, two home runs, 18 RBIs, 29 runs scored, 26 stolen bases, 13 walks, and 43 strikeouts over 182 plate appearances. The left-handed hitter then earned his first promotion to Triple-A Worcester on June 22. Though his stay there (which was related to Worcester’s lack of outfield depth at the time) lasted less than a week, Rosier seemingly made the most of the opportunity by reaching base four times and recording one outfield assist in three games with the WooSox at Polar Park. He then re-joined the Sea Dogs for the start of their series against the New Hampshire Fisher Cats on June 29.

Rosier was a mainstay in Portland’s lineup for the next two-plus months. He slashed .266/.346/.427 with 10 doubles, three triples, five homers, 21 RBIs, 35 runs scored, 23 stolen bases, 20 walks, and 43 strikeouts across 55 more games (218 plate appearances) for Boston’s Eastern League affiliate before making yet another jump to Worcester in mid-September.

To close out the 2023 minor-league season, Rosier went 10-for-33 (.303) with three doubles, two runs driven in, four runs scored, two walks, and seven strikeouts in nine games. Altogether, he batted .285/.349/.439 in 104 games (400 plate appearances) with Portland and .282/.364/.359 in 12 games with Worcester, combining for 25 doubles, six triples, seven home runs (all at Double-A), 41 RBIs, 70 runs scored, 49 stolen bases, 37 walks, and 96 strikeouts between the two affiliates.

In the process of stealing the second-most bases among minor-leaguers in the organization (trailing only David Hamilton’s 57), Rosier was named the Red Sox’ Minor League Base Stealer of the Month once (April) and Minor League Baserunner of the Month twice (May, July). Defensively, the 5-foot-10, 180-pounder started at least one game at all three outfield spots for Portland and Worcester last season. Though the bulk of his playing at both stops time came in right field (652 2/3 combined innings), he recorded seven outfield assists and committed just three errors in 228 total chances.

While Worcester’s season drew to a close in the final week of September, Rosier and seven other Red Sox prospects headed out west to play in the Arizona Fall League. Suiting up for the Glendale Desert Dogs, who were led by a familiar face in Greenville manager Iggy Suarez, Rosier went 24-for-93 (.258) with four doubles, two triples, eight RBIs, 14 runs scored, a team-leading eight stolen bases, 13 walks, and 19 strikeouts over 23 games while, again, getting the chance to play all three outfield positions. Like left-hander Zach Penrod, Rosier also earned AFL All-Star honors.

On the heels of such an eventful 2023, Rosier comes into the new year ranked by SoxProspects.com as the No. 50 prospect in Boston’s farm system. Barring a trade, the Maryland native — who does not turn 25 until September — is expected to return to Worcester for the start of the 2024 minor-league season.

Given his elite speed, which FanGraphs grades as an 80 on the 20-80 scouting scale, Rosier could certainly emerge as a candidate for a big-league call-up later in the year if the Red Sox find themselves in the hunt for a postseason spot and in need of some wheels off the bench.

In the interim, one has to wonder if Rosier is in line to receive a non-roster invitation to major-league spring training, which — for the Red Sox — gets underway from Fort Myers in a little over a month.

(Picture of Corey Rosier: Erica Denhoff/Icon Sportswire via Getty Images)