Every winter, hundreds of nondescript minor leaguers become minor-league free agents. Players are granted minor-league free agency when they’re omitted from a club’s 40-man roster and have also spent at least six years in the minor leagues. In other words, they’re players who weren’t good enough to merit a call-up after several years in the minors, and their organizations suspect they lack the potential to be worthy of a 40-man spot.

Some of these players latch on with new organizations; some of them don’t. But regardless, the overwhelming majority never have much big league success. A couple of years ago, Carson Cistulli found that only about 1% of minor-league free agents produce at least 0.5 WAR the following season. Minor-league free agents are the absolute bottom of the barrel when it comes to player transactions. But there’s an occasional gem at the bottom of that barrel. It’s not unheard of, at all, for a minor-league free agent to make a major-league impact. Here, in no particular order, are some notable examples from the past few years: Gregor Blanco, Jesus Guzman, Donovan Solano, Yangervis Solarte, Jake Smolinski, Jose Quintana and Al Alburquerque. Each left his original organization via minor-league free agency, but achieved some level of big-league success with his new team.

Using my KATOH projection system, I identified the hitters from this year’s minor-league free-agent class who showed glimmers of promise in the minors. Based on their minor-league numbers, there’s reason to believe they might be able to help at the big-league level sometime soon. This analysis only considers players who logged at least 200 minor-league plate appearances in 2016. For reference, here’s a similar article I wrote last year. Tomorrow, I’ll repeat this exercise for pitchers.

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1) Todd Glaesmann, OF, 2.2 WAR

For the second year in a row, Glaesmann hit respectably in the upper levels of the minor leagues. He spent 2016 at the Diamondbacks’ Double-A and Triple-A affiliates, where he turned in a .272/.312/.462 performance. Glaesmann’s numbers aren’t flashy, but he’s hit for a healthy amount of power while simultaneously not striking out terribly often.

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In a few hours, Ryan Merritt will take the mound for the Indians in Game 5 of the ALCS. Statistically, Merritt doesn’t look like much. He’s posted exceptionally low strikeout numbers at every stop, and although he’s coupled them with minuscule walk rates, KATOH isn’t sold. KATOH likes tall pitchers who strike guys out. As a 6-foot hurler who pitches to contact, Merritt is the exact opposite of that.

KATOH pegs Merritt for just 1.4 WAR over his first six seasons by the traditional method and 1.5 WAR by KATOH+, which integrates Baseball America’s rankings. To help you visualize what his KATOH projection entails, here is a probability density function showing KATOH+’s projected distribution of outcomes for Merritt’s first six seasons in the major leagues.

To put some faces to Merritt’s statistical profile, let’s generate some statistical comps for the command-oriented lefty. I calculated a weighted Mahalanobis distance between Merritt’s performance this year and every Triple-A season since 1991 in which a pitcher faced at least 350 batters. In the table below, you’ll find the 10 most similar seasons, ranked from most to least similar. The WAR totals refer to each player’s first six seasons in the major leagues. A lower “Mah Dist” reading indicates a closer comp.

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Over the next several months, I’ll be releasing comprehensive reports on each major-league club’s farm system and the prospects therein. Implicit in this is that I will be ranking the prospects – both within each farm system and across baseball – based on my own evaluation of the players as well as that of industry sources. The players will be ordered by their “Future Value” grade. This Future Value methodology was brought to FanGraphs in 2014 by former Lead Prospect Analyst, Kiley McDaniel (reggaeton horn).

If you’d like to read what is essentially the Book of Genesis on Future Value, then I’ll direct you here for McDaniel’s (reggaeton horn) 2015 top-prospects list for an explanation of FV and its merits, as well as here for discussion about the 20-80 scouting scale.

In short, Future Value attempts to combine a prospect’s potential (reasonable ceiling and floor) as well as his chance of realizing it (including injury-related risks or proximity to the majors) into one tidy, value-based number.

There are some pretty obvious issues with this system, some of which are practical, others more personal, and I’ll touch on those briefly before explaining why I’m retaining the system.

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I’ll be honest: three months ago, I had never heard of Andrew Toles. I first became aware of the 24-year-old’s existence back in July when I was finalizing my latest KATOH model, and Toles projected favorably. Even then, I didn’t give him much thought. Sure, his performance was encouraging, but he was hardly the only obscure player with a great projection. While I’d contend that all prospects of this ilk deserve more attention, most of Toles’ success had come below the Triple-A level. KATOH is built for the long game, and relatively few A-ballers have an immediate big-league impact.

Toles had an immediate big-league impact. He started hitting as soon as the Dodgers promoted him to the majors in July and he hasn’t stopped since. He ended the year with a .314/.365/.505 batting line in 48 games and played his way into near-regular playing time against right-handed pitchers. His .385 BABIP suggests luck played a role, but at the very least, he showed he belongs on a big-league roster.

Toles’ minor-league numbers from this year strongly resemble what he did in LA. In fact, they were a bit better. Between High-A, Double-A and Triple-A, he slashed .331/.374/.511. Toles made a reasonable amount of contact, showed a healthy amount of power and was active on the bases — all while playing mostly center field. From AbBall to the majors, it’s hard to poke holes in what Toles has done this year.

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With the minor-league playoffs finished, the Baltimore Orioles summoned first-base prospect Trey Mancini from Triple-A Norfolk this week to help sure up their offense. Mancini wasted no time making an impact for the O’s, notching his first career home run in Tuesday’s game against the Red Sox. Mancini broke out in 2015 when he slashed an outstanding .331/.370/.539 between High-A and Double-A. His raw numbers regressed a bit this season as he moved to a more pitcher-friendly park, but he still managed a strong .282/.357/.458 showing, with almost all of that coming at Triple-A.

Mancini’s power is enticing. In each of the last two seasons, he’s reached the 20-homer mark and ISO’d over .175. However, some of his other attributes take away from some of that shine. Mancini’s a first baseman, meaning he’ll need to hit a bunch to have a long-term future in the bigs. He also turns 25 next spring, making him a bit old for even the Triple-A level. And perhaps most importantly, he kind of strikes out a lot — likely due in part to his long swing.

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Following the end of their Triple-A affiliate’s championship season in the Pacific Coast League, the San Diego Padres promoted a small collection of players to their major-league club on Tuesday. Below are forecasts for the three most notable prospects of that group — Carlos Asuaje, Hunter Renfroe, and Manuel Margot — according to my KATOH system and presented in order of projected WAR.

Note that KATOH represents the WAR projection for the relevant player’s first six years in the majors; KATOH+ is that same thing, except with the player’s Baseball America ranking included as a variable.

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Manny Margot, CF (Profile)

KATOH: 13.0 WAR
KATOH+: 13.6 WAR

Margot’s game centers around speed and contact. The 21-year-old struck out in just 12% of his plate appearances in Triple-A this year on his way to a .307/.355/.442 slash line. He also racked up an exciting 32 steals, while playing elite center field defense by Clay Davenport’s numbers. Margot also isn’t a zero in the power department, as he managed a respectable 46 extra-base hits in the minors this year, including seven homers. He’s one of the very best prospects in baseball by my math, and he’s big-league ready.

To help you visualize what his KATOH projection entails, here is a probability density function showing KATOH+’s projected distribution of outcomes for Margot’s first six seasons in the major leagues.

To put some faces to Margot’s statistical profile, let’s generate some statistical comps for the speedy outfielder. I calculated a weighted Mahalanobis distance between Margot’s performance this year and every Triple-A season since 1991 in which a center fielder recorded at least 400 plate appearances. In the table below, you’ll find the 10 most similar seasons, ranked from most to least similar. The WAR totals refer to each player’s first six seasons in the major leagues. A lower “Mah Dist” reading indicates a closer comp.

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On Monday, the Oakland Athletics promoted a couple of hitting prospects from Triple-A: Renato Nunez and Matt Olson. Both Nunez and Olson came off the bench on Monday to make their big-league debuts. With Billy Butler out of the picture, and Danny Valencia likely soon to follow, Nunez and Olson might see a decent chunk of playing time these next two weeks.

Olson’s numbers have trended in the wrong direction since his 37-homer season in the Cal League in 2014. He slashed .249/.388/.438 in Double-A last year and only managed to hit .235/.335/.422 in the PCL this year. Throughout his minor-league career, Olson has demonstrated good power and a willingness to draw walks. He’s also a 22-year-old with a 6-foot-5 frame, which suggests he may still have some untapped upside. But his underwhelming performance, defensive limitations and 24% strikeout rate don’t bode particularly well for his future in the show.

KATOH pegs Olson for 3.7 WAR over his first six seasons by the traditional method and 2.8 WAR by KATOH+, which integrates Baseball America’s rankings. To help you visualize what his KATOH projection entails, here is a probability density function showing KATOH+’s projected distribution of outcomes for Olson’s first six seasons in the major leagues.

To put some faces to Olson’s statistical profile, let’s generate some statistical comps for the newest Brewers prospect. I calculated a weighted Mahalanobis distance between Olson’s performance this year and every Double-A season since 1991 in which a first baseman or corner outfielder recorded at least 400 plate appearances. In the table below, you’ll find the 10 most similar seasons, ranked from most to least similar. The WAR totals refer to each player’s first six seasons in the major leagues. A lower “Mah Dist” reading indicates a closer comp.

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The Houston Astros have summoned David Paulino from the minor leagues to make his big-league debut against the Indians today. Paulino was utterly dominant in the minors this year. Splitting time between Double-A and Triple-A, the 6-foot-7 righty whiffed 29% of batters faced on his way to a 2.00 ERA and 2.24 FIP. Somewhat quietly, Paulino put together one of the best seasons in the minors in 2016.

Paulino had shown flashes of excellence in the past, but his triumphs in the low minors have been regularly interrupted by injury. He put up a 2.63 FIP across three levels of A-ball last year, and was missing bats in rookie ball as far back as 2011. But his 2016 campaign marks the first time he’s logged anything resembling a full season, and the first time he’s had the opportunity to prove himself against advanced hitters.

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Back at the trade deadline, the Milwaukee Brewers dealt Jonathan Lucroy and Jeremy Jeffress to the Texas Rangers in exchange for prospects Lewis Brinson and Luis Ortiz, along with a player-to-be-named-later. That player now has a name, and it’s Ryan Cordell. Cordell spent all of 2016 playing at the Double-A level, where he slashed a solid .264/.319/.484 with 19 homers and 12 steals. He produced a similar batting line last year, though it was split up between a dominant performance at High-A and an underwhelming showing at Double-A.

Cordell doesn’t have any one skill to separate him from the crowd offensively, but he doesn’t have any massive weaknesses either. He hits for decent power, doesn’t strikeout terribly often and provides some value on the bases. Defensively, he grades out as well above average in the outfield, with the plurality of his games coming in center. Altogether, that makes for a promising young player.

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In June, I talked to Jesse Winker following a 2-for-3 game that included a double and a walk. At the time, a big-league call-up seemed almost imminent. The top outfield prospect in the Cincinnati system was performing well for Triple-A Louisville, and with the Reds in rebuild mode, Great American Ballpark loomed right around the corner.

I wrote up the interview, then decided to hold it until the call-up came. Days later, Winker hurt his wrist and missed the next three-and-a-half weeks. Upon his return, he went 20-for-50 — albeit with limited power — while, 100 miles north, the big-league club continued to swim against the tide.

August came and went, and Winker went nowhere. As Reds fans scratched their heads, he remained in Louisville where he celebrated his 23rd birthday and finished the season with a .303/.397/.394 slash line. Winker went deep just three times in 448 plate appearances — he had 13 long balls last year in Double-A — and walked and struck out an equal number of times (59).

As of today, Winker is still awaiting his first big-league call-up. Three months after it was conducted, the interview won’t wait any longer. Here is what Winker had to say following the June game.

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Winker on his game against the Syracuse Chiefs: “I didn’t know too much about their starter [Paolo Espino]. We did have a scouting report, and I was talking to Hernan Iribarren about how he likes to attack left-handed hitters, but the game kind of dictates itself. With a certain amount of outs and a certain number of guys on base, pitchers are going to attack you a certain way.

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