The 2021 MLB Draft is still over three months away, but with the college and high school baseball seasons in full swing across the country, some prospects are beginning to separate themselves from the rest of the pack.

The Red Sox will be making their top selection in this year’s draft with the fourth overall pick, marking the first time since 1967 that the club has made its first pick that early in a draft.

Because they will make their first selection so early on in the draft process this summer, the Sox will surely have their pick of prospects to choose from outside of the players who will be taken by the Pirates, Rangers, and Tigers at picks 1, 2, and 3.

“Right now, at this point in the process, we would be scouting everyone just as hard as we possibly could,” Red Sox area scout Danny Watkins explained last month on Podding the Red Sox: A BloggingtheRedSox.com Podcast.

Earlier this week, MLB.com’s Jim Callis wrote that “it’s very possible that” Vanderbilt’s Kumar Rocker and Jack Leiter and Dallas Jesuit High School shortstop Jordan Lawler could be the first three players off the board in July.

That would lead up to the Sox making their first pick at No. 4, and the best player available in this scenario would be none other than Eastlake High School (Calif.) shortstop Marcelo Mayer.

In their most recent top-300 draft rankings, Baseball America had Mayer listed as their fourth-ranked draft-eligible prospect behind only Rocker, Leiter, and Lawler.

“Mayer started getting attention from scouts at Eastlake as a freshman, where he showed a smooth left-handed stick at the plate and advanced defensive actions up the middle,” BA’s Carlos Collazo wrote of the 18-year-old infielder. “Mayer is arguably the top defensive shortstop in a class that is deep at the position. He glides around the infield dirt with silky smooth actions and has the hands, footwork and arm strength to stick at the position long term. He always seems to slow the game down, and has no problem throwing from multiple angles with an accurate arm.

“Mayer also has upside offensively,” Collazo added. “He has fringe-average power now, but evaluators believe he could tap into above-average power down the line and he controls the zone well with a swing that’s leveraged for fly balls.”

Mayer, who does not turn 19 until December, is listed at 6-foot-3 and 185 pounds. As of April 7, the Southern California commit was slashing .381/.600/.761 with two home runs, 11 RBI, and six stolen bases through his first eight games of the year for Eastlake, per MaxPreps.

As their fourth-ranked draft prospect, Baseball America also had Mayer going to the Red Sox at No. 4 in their most recent mock draft from March 29.

“It seems like Mayer is the clear No. 4 after the top trio of players on the board,” Collazo wrote of the California native. “Whether he is in the mix of the top tier or just on the cusp of joining that top tier is still to be determined. Some scouts believe he has a chance to be the best pure hitter in the draft — college or high school — and with an impressive glove at a premium position, that gives him a two-way toolset that shouldn’t last long on the board.”

Collazo added that “at the moment, it seems like the ‘place to pick’ in this year’s draft class is either No. 3 or 4.”

Last year, in Chaim Bloom’s first draft as Red Sox chief baseball officer, Boston had to wait until pick No. 17 to make their first pick. This year, that wait will be a lot shorter.

“You don’t have control over who’s picked ahead of you at 17,” Red Sox amateur scouting director Paul Toboni told The Boston Globe’s Alex Speier last month. “You’ve got to cover a wider pool of players. This year, we get to make the decision: Let’s figure out who is in our top five, six, seven, eight — whatever number you want to throw out — and scout those players really, really hard.”

The Sox will have more of a chance to get a look at Mayer — as well as the other top high school talent expected to comprise this year’s draft class — at the first-ever MLB Draft Combine, which is slated to take place in Cary, N.C. from June 20 through June 28.

Per Collazo, the combine will feature “the top 88 high school players eligible for the 2021 draft,” all of whom will partake in an eight-game tournament as well as a “pro-style workout.”

Also, for what it’s worth, the recommended slot value assigned to the fourth overall pick in this year’s draft is approximately $6.64 million.

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