Below is an analysis of the prospects in the Colorado Rockies farm system. Scouting reports are compiled with information provided by industry sources as well as from my own observations. The KATOH statistical projections, probable-outcome graphs, and (further down) Mahalanobis comps have been provided by Chris Mitchell. For more information on thes 20-80 scouting scale by which all of my prospect content is governed you can click here. For further explanation of the merits and drawbacks of Future Value, read this. -Eric Longenhagen

The KATOH projection system uses minor-league data and Baseball America prospect rankings to forecast future performance in the major leagues. For each player, KATOH produces a WAR forecast for his first six years in the major leagues. There are drawbacks to scouting the stat line, so take these projections with a grain of salt. Due to their purely objective nature, the projections here can be useful in identifying prospects who might be overlooked or overrated. Due to sample-size concerns, only players with at least 200 minor-league plate appearances or batters faced last season have received projections. -Chris Mitchell

Other Lists
NL West (ARI, COL, LAD, SD, SF)
AL Central (CHW, CLE, DET, KC, MIN)
NL Central (CHC, CIN, PIT, MIL, StL)
NL East (ATL, MIA, NYM, PHI, WAS)
AL East (BAL, BOS, NYY, TB, TOR)

60 FV Prospects

Relevant/Interesting Metrics
Recorded .199 ISO in Low-A.

Scouting Report
Some amateur evaluators thought Rodgers, the top prep talent in the 2015 draft, was the best overall prospect in the class because they liked his chances to stay at shortstop and eventually hit for more power than Dansby Swanson and Alex Bregman. While the other two have already made their big-league debuts, Rodgers has hit well as a young regular for two pro seasons while maintaining (and, in 2016, improving) a body some thought would fill out and require a move to third base.

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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.

*****

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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The Toronto Blue Jays agreed to a deal with 23-year-old Cuban prospect Lourdes Gurriel Jr. on Friday. The deal was first reported by MLB.com’s Jesse Sanchez and the terms of the contract — seven years, $22 million — was first reported by Joel Sherman of the New York Post.

The reports I’ve gotten from international scouts regarding Gurriel are solid, if unspectacular. Scouts see the physical talent to play at second, third, or the corner outfield and one source with whom I spoke thought he’d have a chance of playing center field with reps. His arm is plus and he’s an average runner (above-average underway) with passable defensive actions on the infield.

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There are a lot of reasons to assume that right-handed Boston Red Sox prospect Michael Kopech is well positioned — or, at least, as well positioned as any young pitcher can be — not only to reach the majors but also to experience some success while there. The velocity is one reason why, obviously. He reportedly hit 105 mph on multiple radar guns earlier this summer. He was sitting at 93-97 during instructional-league play last month. He’s recorded an average fastball of 98.7 mph in the Arizona Fall League. Provided his arm remains attached and in mostly serviceable condition, he appears certain to serve at least as competent reliever.

There are other promising indicators, though. Objective ones. Consider: Kopech was selected 33rd overall in the 2014 draft. Research by Matthew Murphy indicates that players taken between 31st and 35th overall as amateurs produce about two and three wins over the course of their team-controlled years. As for his status as a prospect, specifically, one finds that Kopech was ranked 89th on last year’s edition of Baseball America’s top-100 list. The most recently updated iteration of Kevin Creagh and Steve DiMiceli’s work on prospect valuation suggests a pitcher ranked between 75 and 100 on BA’s list is likely to contribute something like three or four wins before reaching free agency.

Two or three or four wins might not seem like a great result over half a decade, but that’s also just an average figure. There’s a lot of attrition baked into it, a lot of zero-win seasons. The point is that, on average, a pitcher with Kopech’s profile ends up contributing in the majors. That has considerable value.

There’s one more promising indicator for Kopech, though, and it’s not necessarily one you’d expect — namely, his performance so far in the Arizona Fall League, where he’s recorded the highest strikeout rate among starters. Given the circumstances under which it’s played, there are multiple reasons to discount the numbers coming out of the AFL. It’s a developmental league, first of all. The mandate isn’t really for prospects to “win” as much as it is to improve. Plus there’s also the fact of the inflated run environment, which is probably the product of an imbalance in the quality of pitching and hitting prospects and also the product of the weather in Phoenix. Finally, there’s an even more basic reason why to approach Fall League data with some caution: the samples are small. There are only about 30 games in an AFL season — or, the equivalent of a month’s worth of regular-season major-league play. The dangers of extrapolating too much from a single month of data are manifest.

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Detroit acquired RHP prospect Victor Alcantara (video from Fall League here) from Anaheim last night in exchange for OF Cameron Maybin. Alcantara has been pitching for the Scottsdale Scorpions in the Arizona Fall League, and I’ve seen him a few times over the past several weeks.

Alcantara has mostly been 91-95 with sinking arm-side movement. His fastball command is well below average, a 30 on the 20-80 scale for me, and his delivery is full of effort and violent moving parts. His mid-80s slider is consistently above average and features more length than is usual for a slider that hard. I’ve seen some changeups as well, mostly in the 86-87 mph range, but the best one I’ve seen has been a 40 on the scale.

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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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