Red Sox promote IF prospect Marvin Alcantara to Double-A Portland

The Red Sox have promoted infield prospect Marvin Alcantara from High-A Greenville to Double-A Portland, as was first reported by Andrew Parker of Beyond the Monster.

Alcantara, 20, will be tested in the upper minors for the first time after an up-and-down start to his 2025 season. The right-handed hitter broke camp with Greenville earlier this spring and came out of the gates firing, slashing .358/.427/.433 with two doubles, one home run, and eight RBIs in his first 18 games (75 plate appearances) through the end of April. He has since struggled to a .157/.232/.196 line with two doubles and seven RBIs over 14 games (56 plate appearances) in May.

Overall, Alcantara batted .271/.344/.331 (98 wRC+) with four doubles, one home run, 15 RBIs, 17 runs scored, four stolen bases, 11 walks, and 17 strikeouts in 32 games (131 plate appearances) for Greenville to begin the season. Among 83 qualified South Atlantic League hitters entering play Tuesday, he ranked third in strikeout rate (13 percent), eighth in swinging-strike rate (7.7 percent), 20th in batting average, and 31st in on-base percentage, per FanGraphs.

On the other side of the ball, Alcantara saw playing time at every infield position besides first base in his first stint with Greenville. The fluid 5-foot-10, 157-pounder (listed height and weight) logged 126 innings at second base, 76 1/3 innings at third base, and 63 2/3 innings at shortstop, committing four errors in 94 total defensive chances (.957 fielding percentage). He also made one start at DH.

Alcantara originally signed with the Red Sox for just $30,000 in January 2022 as an unheralded international free agent out of Venezuela. The La Victoria native made his professional debut in the Dominican Summer League that June and has steadily worked his way up the organizational ladder since then. He is currently ranked by SoxProspects.com as Boston’s No. 39 prospect and is regarded by many as one of the better defensive infielders in the club’s farm system.

Alcantara, who does not turn 21 until November, will bat eighth and start at second base in Portland’s series opener against Reading at Hadlock Field on Tuesday night. First pitch is scheduled for 6:00 p.m. ET.