Daily notes on prospects from lead prospect analyst Eric Longenhagen. Read previous installments here.

Breiling Eusebio, LHP, Colorado (Profile)
Level: Short Season  Age: 20   Org Rank: NR   Top 100: NR
Line: 5 IP, 4 H, 0 BB, 1 R, 7 K

Notes
It’s been a strong 2017 affiliate debut for Eusebio, who looked quite good throughout extended spring training, his fastball often sitting 90-94 with some tail. His low-70s curveball improved as we inched closer to the summer and it, too, was missing bats as June arrived and is currently average, flashing above. Eusebio has trouble timing his delivery, which can negatively impact his command, but he’s deceptive, throws hard for a lefty starting-pitching prospect, and has breaking-ball feel. Very much a prospect.

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With Josh Reddick sidelined by a concussion, the Astros summoned 23-year-old center fielder Derek Fisher to the big leagues yesterday. The early returns are good: in his debut, Fisher went 2-for-3 with a homer and two walks.

Fisher had more than earned this opportunity, slashing .335/.401/.608 at Triple-A this year. A power-speed threat, Fisher eclipsed 20 homers and 20 steals in both 2015 and 2016, and Eric Longenhagen gave him raw power and speed grades of 60 and 70, respectively. Fisher had a bit of a strikeout problem in the past, but has managed to slice his strikeout rate from 27% last year to 19% this year without sacrificing any of his power.

KATOH loves Fisher, which shouldn’t come as much of a surprise given his excellent performance this year. I have him projected for 8.1 WAR over his first six seasons by stats-only KATOH and 6.3 WAR by KATOH+, which incorporates Eric Longenhagen’s relatively modest 45 FV grade. Those projections make him the 18th- and 48th-best prospect in baseball, respectively.

To put some faces to Fisher’s statistical profile, let’s generate some statistical comps for the toolsy center fielder. I calculated a Mahalanobis distance between Fisher’s Double-A and Triple-A performance and every season since 1991. 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.

Please note that the Mahalanobis analysis is separate from KATOH. KATOH relies on macro-level trends, rather than comps. The fates of a few statistically similar players shouldn’t be used to draw sweeping conclusions about a prospect’s future. For this reason, I recommend using a player’s KATOH forecast to assess his future potential. The comps give us some interesting names that sometimes feel spot-on, but they’re mostly just there for fun.

It’s not immediately clear how, or how often, Houston will work Fisher into their lineup once Reddick is healthy. But Houston would perhaps benefit from shifting some of Nori Aoki’s at-bats to Fisher, giving them an outfield of Fisher, Reddick and George Springer. Regardless, Fisher’s rare combination of power, speed, and contact ability makes his future look incredibly bright. And he made it clear with his 2017 performance that he has nothing left to prove in the minor leagues.

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In addition to calling up stud center-field prospect Lewis Brinson, Milwaukee also recently summoned talented lefty and KATOH crush Josh Hader. Although Hader’s worked primarily as starter in the minors, the Brewers plan to use him out of the bullpen for the time being. A 19th-round pick out of high school, Hader’s been exceeding expectations for years. He owns a 3.87 FIP and 27% strikeout rate in 541 minor-league innings. In 25 starts between Double-A and Triple-A last year, he pitched to a sparkling 3.07 FIP with a 31% strikeout rate.

Things didn’t go as swimmingly for Hader in Triple-A this year, however. He maintained a solid 22% strikeout rate, but matched it with a 14% walk rate and coughed up an uncharacteristic 14 homers in 52 innings. The end result was a 5.37 ERA and 4.93 xFIP, which doesn’t exactly scream “big-league ready.”

Still, KATOH remains optimistic. My system projects Hader for 5.0 WAR over his first six seasons by the traditional method and 5.7 WAR by KATOH+, which incorporates scouting rankings. That makes him one of the top 10 pitching prospects in the minors, and a mid-top-100 guy overall.

To put some faces to Hader’s statistical profile, let’s generate some statistical comps for the 6-foot-3 lefty. I calculated a weighted Mahalanobis distance between Hader’s Double-A and Triple-A performance and every season since 1991. 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.

Please note that the Mahalanobis analysis is separate from KATOH. KATOH relies on macro-level trends, rather than comps. The fates of a few statistically similar players shouldn’t be used to draw sweeping conclusions about a prospect’s future. For this reason, I recommend using a player’s KATOH forecast to assess his future potential. The comps give us some interesting names that sometimes feel spot-on, but they’re mostly just there for fun.

Despite his relative lack of prospect pedigree, Hader’s stuff is almost certainly of big-league quality. The lefty’s fastball averaged over 94 mph in his debut, and both his slider and changeup project to plus according to Eric Longenhagen. However, scouts have long contended that Hader profiles best as a reliever. To wit:

• Eric Longenhagen, 2017: “Those who consider him a reliever cite the rarity of a delivery like this in starting rotations across baseball, the potential platoon issues Hader might face as a low-slot lefty, and his fringey control.”
• Baseball America Prospect Handbook, 2016: “His reliance on his outstanding fastball combined with just ordinary control make him a possible bullpen candidate.”
• Baseball America Prospect Handbook, 2015: “Durability will always be a question because of Hader’s size and how he slings the ball across his body… His reliance on his fastball profiles him better as a reliever.”
• Baseball America Prospect Handbook, 2014: “It’s one of the most unconventional deliveries a starter could use… Scouts see him as a future lefty reliever where his low arm angle will make life difficult for lefthanders.”

Despite the persistent “future reliever” label, Hader dominated for years as a starter in the minors. But when he finally sputtered in Triple-A, the Brewers seemingly decided to try him in the pen. Given his stuff and minor-league performance, I have little doubt that he’ll be a dominant force there.

Three months ago, few would have predicted the Brewers would be atop the National League Central in June, but here we are. The Cardinals, Cubs, and Pirates have all fallen short of preseason expectations, while Milwaukee has surprisingly kept their record above .500. Regardless of what the standings say, Milwaukee’s roster pales in comparison to the Cubs’ and Cardinals’ on paper, which is why we give the Brewers a mere 3% chance of winning the division.

Milwaukee’s team just got a bit better, however, as they’ve called up top prospect Lewis Brinson to play some outfield. Brinson was having a fine season in Triple-A, slashing .312/.397/.503. He’s hit very well for a center fielder — and exceptionally well for a good defensive center fielder who’s only 23.

Brinson’s come a long way since his early days as a professional, especially in the strikeout department. He struck out an alarming 38% of the time in Low-A back in 2013, but has hacked several percentage points off that mark since. His 22% strikeout rate in Triple-A this year is still a bit high, but not alarmingly so. He’s made this improvement without giving up much in other categories, either. His 20 extra-base hits, seven steals, healthy walk rate, and center-field defense more than outweigh the remaining strikeout risk.

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Daily notes on prospects from lead prospect analyst Eric Longenhagen. Read previous installments here.

Dedgar Jimenez, LHP, Boston (Profile)
Level: Low-A   Age: 21   Org Rank: NR   Top 100: NR
Line: 6 IP, 8 H, 0 BB, 1 R, 7 K

Notes
Jimenez has 60 strikeouts and just 17 walks over 57.1 innings this year. He’s big — 6-foot-3 and 240 pounds — but is a good athlete who repeats his delivery and not only throws a lot of strikes but often throws them exactly where he intends to. His stuff is fringey, his best pitch an average slider which he uses heavily, and he’s surviving purely off of command right now. Without any physical projection, it’s hard to envision him competing at upper levels with this stuff, even if he has plus command.

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With nearly two months of games in the books, I’m taking another look at the pitching prospects who have most improved their KATOH+ projections since the preseason. To ensure I am writing up actual prospects rather than fringey ones, I’ve set a minimum KATOH+ projection of 3.0 WAR and listed the five most-improved lesser prospects at the bottom. I did not include guys who are injured or who have graduated to the big leagues. A reminder: a player’s KATOH forecast denotes his projected WAR total over the first six seasons of his major-league career.

Brent Honeywell, RHP, Tampa (Profile)
Preseason KATOH+ Projection: 5.7
Current KATOH+ Projection: 7.5

Honeywell has dominated while splitting time between Double-A and Triple-A this year. He’s struck out 30% of opposing hitters and walked less than 5%. The results haven’t quite been there in Triple-A, as evidenced by his 4.93 ERA, but his 2.89 xFIP explains KATOH’s admiration. He’s become one of baseball’s very best pitching prospects.

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With nearly two months of games in the books, I’m taking another look at the hitting prospects who have most improved their KATOH+ projections since the preseason. To ensure I am writing up actual prospects rather than fringey ones, I’ve set a minimum KATOH+ projection of 3.0 WAR and listed the five most-improved lesser prospects at the bottom. I did not include guys who are injured or who have graduated to the big leagues. A reminder: a player’s KATOH forecast denotes his projected WAR total over the first six seasons of his major-league career.

Jesus Sanchez, OF, Tampa (Profile)
Preseason KATOH+ Projection: 0.5
Current KATOH+ Projection: 5.8

Sanchez appeared on the two previous iterations of this exercise and continues to perform as a teenager in Low-A. He’s hit for an impressive amount of power and has also been making more contact of late. As of this writing, he’s struck out just four times over his last 10 games. The combination of contact, power, and youth will win over KATOH in a hurry.

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In something of a surprise move, the Blue Jays summoned top prospect Anthony Alford to the big leagues on Friday. The move is a surprise not because Alford lacks talent, but because he’s played a mere 33 games above A-ball, all of which came this season with the Jays’ Double-A affiliate. Alford has performed exceptionally well this season, slashing .325/.411/.455. But he was overmatched by low-minors pitching as recently as last season, when he struck out 29% of the time and could only muster a .236/.344/.378 batting line at High-A.

Alford cut his strikeout rate by over 12 percentage points (from 29% to 17%) this year while maintaining his robust walk totals and modest power. The result has been substantially better offensive numbers. This is an encouraging development, especially since Alford’s so much more than his offense. He’s a 70 runner per Eric Longenhagen, which makes him a no-doubt center fielder and a threat on the bases.

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A couple of weeks ago, I looked at the 10 pitching prospects who had most improved their KATOH+ projections over the season’s first few weeks. Now that we have a more meaningful sample of games to analyze and a new Baseball America top-100 list baked in, I’m repeating that exercise. It’s still early in the season, but not too early to start identifying players who are performing better than they have in the past. A reminder: a player’s KATOH forecast denotes his projected WAR total over the first six seasons of his major-league career. I performed a similar exercise for hitters yesterday.

To ensure I am writing up actual prospects rather than fringey ones, I set a minimum KATOH+ projection of 4.0 WAR this time around. I still listed the five most-improved lesser prospects at the bottom.

Luiz Gohara, LHP, Atlanta (Profile)
Preseason KATOH+ Projection: 2.9
Current KATOH+ Projection: 5.6

Gohara was utterly filthy in High-A this year. He struck out 27%, walked 7%, and didn’t concede a single homer over seven starts, likely due to his 57% ground-ball rate. That performance earned him a promotion to Double-A. Unfortunately, he injured his arm in his first start.

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