Top Red Sox prospect Marcelo Mayer off to strong start with Double-A Portland

After a winter full of skepticism, shortstop Marcelo Mayer is using the early stages of the minor-league season to show why he should still be considered the top prospect in the Red Sox organization.

To begin the 2024 campaign, Mayer has strung together a seven-game hitting streak for Double-A Portland. Following Sunday’s 9-5 win over the Reading Fightin Phils, the left-handed hitter is now 10-for-28 (.357) with one double, one home run, five RBIs, seven runs scored, two stolen bases, two walks, and eight strikeouts for the Sea Dogs.

On the other side of the ball, Mayer has seen all of his playing time on the field to this point in the season come at shortstop. The 6-foot-3, 188-pounder has logged a team-leading 50 innings at short thus far and has yet to commit an error.

Still just 21 years old, Mayer really couldn’t ask for a better start after what went down last season. The former fourth overall pick in the 2021 draft suffered a left shoulder impingement while with High-A Greenville early in the year and attempted to play through the discomfort. He managed to make it to Portland and represent the Red Sox at the All-Star Futures Game over the summer, but he struggled mightily at the plate before going on the injured list — and ultimately being shut down — in the first week of August.

Mayer received a pain-killing injection in September and spent his offseason rehabbing at home in Chula Vista, Calif., and at the Red Sox’ JetBlue Park complex in Fort Myers, Fla. He focused on building strength back up in that injured shoulder and was deemed a “full go” for Boston’s rookie development program in January.

Though he did not receive an invite to major-league spring training, Mayer got into two Grapefruit League games (as well as the Spring Breakout prospect showcase) and made his impact felt in other areas before breaking camp with Portland for the start of his third full professional season. As Red Sox director of player development Brian Abraham recently told MLB.com’s Ian Browne, Mayer appears to be benefitting from the work he put in during the offseason.

“He worked incredibly hard throughout his progression in the offseason and spring training to prepare for the 2024 season,” said Abraham. “Whether that be rehab-related, strength-related, on-field performance-related, we saw a player working with an intent to be an impact player this season and moving forward. It’s been great to see him continue to mature both on and off the baseball field.”

Mayer, who does not turn 22 until December, is currently regarded by MLB Pipeline as the No. 1 prospect in Boston’s farm system and the No. 15 prospect in all of baseball. If he continues to produce the way he has been to start the season, it will not be long until he garners consideration for a promotion to Triple-A Worcester. From there, the big-leagues are only one call away.

“Continue to become an improved all-around player,” Abraham said when asked about the organization’s developmental goals for Mayer this season. “Improve his range in the field and keep looking to impact the baseball. Have the continued ability to add good weight and strength. Offensively, it’s focusing on pitches within the zone he can do damage with. In simpler terms, increasing his walk percentage and decreasing his strikeout percentage will allow him to be a better overall hitter and maximize his potential.”

Mayer, for his part, explained his own mindset when speaking with WEEI.com’s Rob Bradford on the ‘Baseball Isn’t Boring’ podcast earlier this month. He did so while emphasizing that his shoulder felt great.

“I think I do feel close, but obviously I need to handle business here (in Double-A) first. I need to handle business in Triple-A. So there is still two levels to go,” Mayer said. “I feel close. I feel ready to go, excited for the new year. I’m ready to show myself and what I’m able to do. Again, I’m healthy.”