The Mariners continued their early-January flurry of activity yesterday, swinging two trades in short succession. First, they dealt left-handed pitchers Thomas Burrows and Luiz Gohara to the Braves for Mallex Smith and intriguing arm Shae Simmons. They promptly flipped Smith, along with prospects Carlos Vargas and Ryan Yarbrough, to the Rays for Drew Smyly.

The most interesting players in this deal are likely the two who’ll make an immediate big-league impact — Smith and Smyly — the former of whom KATOH adored heading into 2016. But the other players changing hands also have their merits. Here’s what my KATOH system has to say about the players who spent most of 2016 playing in the domestic minor leagues.

Note that new Atlanta prospect Burrows is omitted due to a lack of professional experience; new Tampa prospect Vargas, because KATOH doesn’t account for Dominican Summer League numbers, which are the only sort Vargas has produced. KATOH denotes WAR forecast for first six years of player’s major-league career. KATOH+ uses similar a methodology with consideration also for Baseball America’s rankings.

*****

Luiz Gohara, LHP, Atlanta (Profile)

KATOH: 3.1 WAR
KATOH+: 2.7 WAR

Gohara posted an ERA well above 5.00 over his first three seasons as a pro, but really found his groove last year as a 19-year-old. In 15 starts across two levels of A-ball, he pitched to a dazzling 3.04 FIP on the strength of a 29% strikeout rate. Gohara was one of the more dominant arms in the low minors.

KATOH isn’t completely sold yet, though, as Gohara has a few negative variables in his profile. For one, he was decidedly bad as recently as 2015, which wasn’t terribly long ago. He’s also never pitched above Low-A, meaning he’s largely untested against high-quality hitters and still has a few years of development that have yet to occur. Even his strong 2016 numbers came in a small sample — 79 innings — so KATOH’s a bit skeptical of the track record he does have.

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Just one day after they dealt away Chris Sale for an impressive crop of young talent, the White Sox continued their tear-down yesterday by flipping Adam Eaton for another nice haul. This time, they landed three young pitchers (roughly in order of consensus future value): Lucas Giolito, Reynaldo Lopez and Dane Dunning.

Here’s how the minor leaguers headed to Chicago grade out by my KATOH system. KATOH denotes WAR forecast for first six years of player’s major-league career. KATOH+ uses similar a methodology with consideration also for Baseball America’s rankings.

*****

Lucas Giolito, RHP (Profile)

KATOH: 5.8 WAR (47th overall)
KATOH+: 10.8 WAR (9th overall)

Giolito is one of those cases where the scouting reports outstrip the on-field performance. Scouts have long raved about Giolito’s fastball-curveball combination, and he parlayed it into dominance at the lower rungs of the minor leagues in 2014 and 2015. He was a consensus top-five prospect at this time last year, but things got a little rough for him in 2016.

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The Red Sox acquired a second pitcher on Tuesday following their trade for reliever Tyler Thornburg — in this case, receiving talented left-handed starter Chris Sale from the White Sox in exchange for an impressive return (roughly in order of consensus future value): Yoan Moncada, Michael Kopech, Luis Alexander Basabe and Victor Diaz.

Here’s how the minor leaguers headed to Chicago grade out by my KATOH system. KATOH denotes WAR forecast for first six years of player’s major-league career. KATOH+ uses similar a methodology with consideration also for Baseball America’s rankings.

*****

Yoan Moncada, 2B (Profile)

KATOH: 6.2 WAR (36th overall)
KATOH+: 14.0 WAR (4th overall)

There’s no denying that Yoan Moncada was one of the most productive hitters in the minors this year. In 61 High-A games, he hit .307/.427/.496. In 44 Double-A games, he slashed .285/.388/.547. He 45 stolen bases across both levels. Moncada excels in multiple areas: he hits for power, runs like crazy, and plays a semi-premium position. His tools are top-notch, which is why he was the consensus No. 1 prospect last summer.

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The Red Sox have landed right-handed reliever Tyler Thornburg in exchange for a trio of players: big-league corner infielder Travis Shaw and prospects Mauricio Dubon and Josh Pennington. Here’s how the minor leaguers headed to Milwaukee grade out by my KATOH system. KATOH denotes WAR forecast for first six years of player’s major-league career. KATOH+ uses similar a methodology with consideration also for Baseball America’s rankings.

*****

Mauricio Dubon, SS, (Profile)

KATOH: 4.6 WAR (92nd overall)
KATOH+: 3.5 WAR (138th overall)

After hitting respectably in the low levels of the minors, Dubon broke out big time last year. He opened the year by hitting a rock solid .306/.387/.379 at High-A, pairing a 9% strikeout rate with a 12% walk rate. He continued raking following a June promotion to Double-A, but did so a bit differently. His walk and strikeout rates both trended in the wrong direction, but for the first time ever, he hit for power.

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Here are the prospects changing hands in last night’s deal between Seattle and Atlanta as evaluated by KATOH projection system. KATOH+ represents a player’s WAR projection over his first six years in the majors and includes said player’s Baseball America’s ranking as a variable.

*****

Alex Jackson, RF, Atlanta

Jackson has struggled to make contact ever since the Mariners popped him sixth overall back in 2014. He hit decently in his second crack at Low-A last year, but KATOH is alarmed by his 27% strikeout rate. The fact that he’s a right fielder who neither steals bases nor grades out well defensively also hurts his case. He’s hit for decent power, but the statistical negatives far outweigh the positives. Of course, Jackson was viewed as one of the best prospects in the country a mere two-and-a-half years ago, so it’s likely he still has some potential that isn’t showing up in his on-field performance. The traditional KATOH also projects him for 0.4 WAR.

KATOH+ Projection for first six years: 0.4 WAR

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The deadline for teams to set their 40-man rosters in anticipation of the Rule 5 draft was Friday, November 18th. This means that all Rule 5 eligible players who are not currently on a 40-man roster will be available in the draft on December 8th. Here’s what makes a player Rule 5 eligible, according to MLB.com:

Players who were signed when they were 19 or older and have played in professional baseball for four years are eligible, as are players who were signed at 18 and have played for five years.

For the coming version of the Rule 5 draft, that’s generally any player drafted out of college in 2013 or earlier, drafted out of high school in 2012 or earlier, or signed as an international free agent in 2012 or earlier. That’s just a rule of thumb, but since very few things in life are simple, there are exceptions and loopholes.

Most of the players listed below aren’t good prospects. If they were, their former teams would have protected them — or traded them to a team with an interest in stashing them. The baseball industry has effectively deemed each of these players to be a fringe prospect at best. Who cares about these mostly bad baseball players? Probably a very tiny sliver of the world’s population, if I’m being honest. But if you you’re still reading, I’m willing to bet you’re part of that small minority. And besides, several Rule 5 picks from recent memory have enjoyed immediate big-league success, including Joe Biagini, Matt Bowman and Odubel Herrera.

Below, you’ll find a list of KATOH’s favorite Rule 5-eligible prospects, grouped by position. Due to the aforementioned loopholes, along with the fact that I checked each player’s eligibility manually, it’s possible I omitted a noteworthy player along the way. All players with at least 200 professional plate appearances or batters faced in 2016 were considered. Note that KATOH denotes the relevant player’s WAR projection over his first six major-league seasons, while KATOH+ denotes the same thing while also accounting for the player’s place (or not) among Baseball America’s top-100 rankings.

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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 pitchers 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 pitchers who faced at least 200 minor-league batters in 2016. For reference, here’s a similar article I wrote last year, and a post from yesterday looking at minor-league free-agent hitters.

*****

1) Jacob Turner, RHP, 2.8 WAR

Turner was the ninth-overall pick back in 2009, and broke in with the Tigers as a 20-year-old in 2011. Six years and three new organizations later, his career is at a crossroads. Turner hasn’t had much success getting big-league hitters out, as evidenced by his 323 big-league innings of 5.00 ERA ball. It’s been a struggle for Turner, but he’s still just 25 and is coming off of a solid showing in Triple-A last year. Despite an unsightly ERA, the 6-foot-4 righty posted a 3.69 FIP at the highest level of the minors with the White Sox. The book isn’t closed on his career yet.

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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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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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