The Rangers lost both Drew Stubbs and Shin-Soo Choo to injury over the weekend, leaving them relatively bare in the outfield. To fill the void, they’ve called up top prospect Joey Gallo, who’s perhaps one of the most exciting prospect in baseball due to his exceptional power. We’ve been here before. The Rangers called Gallo up last summer, too, but thanks to a .204/.301/.417 performance in the show, they wisely concluded he needed more seasoning in the minors. Most concerning of all was his 46% strikeout rate, which was literally over twice the league average.

Based on his recent performance, it seems Gallo’s gotten the seasoning he needed. Last year, Gallo hit .240/.342/.520 between Double-A and Triple-A, and struck out in a super-concerning 37% of his trips to the plate. This year, he’s slashed his strikeout rate to a merely mildly-concerning 23% in Triple-A. As a result, he’s hit a gaudy .265/.415/.639.

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Two months ago, the Houston Astros looked like the obvious favorites in the AL West, but things haven’t exactly gone according to plan. Houston’s off to a disappointing 15-24 start, due in part to some terrible performances in the outfield. While George Springer and Colby Rasmus have hit well, Carlos Gomez, Preston Tucker and Jake Marisnick have a combined 252 plate appearances this year, and each has recorded a wOBA below .250. Gomez has been one of the biggest disappointments in baseball this year, and his struggles appear to be more than just bad luck.

To help fortify their struggling outfield, and provide a spark to their under-achieving team, the Astros have called up 24-year-old Tony Kemp from Triple-A. Although he stands at just 5-foot-7, Kemp hit .314/.393/.391 with 38 steals last season between Double-A and Triple-A, and was off to a similarly good start this year, slashing .298/.410/.405 at Fresno. Kemp’s a second baseman by trade, but has played a good deal of center and left field of late. Dan Farnsworth ranked Kemp 11th on his Astros prospect list heading into the year. Kemp appeared 15th among Houston prospects on Baseball America’s list. KATOH, however, is won over by his stellar minor-league track record. My system ranked him #2 in the Astros system and #53 overall.

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With Starling Marte away on paternity leave, the Pittsburgh Pirates have called up prospect Alen Hanson from the minor leagues. Hanson was off to a fine start in Triple-A, slashing .288/.309/.398 with seven steals. He spent all of last season at the Triple-A level, too, and hit similarly well: .263/.313/.387 with 35 steals. Throw in that he’s primarily a middle infielder, and it’s clear Hanson had little left to prove in the minors.

If it feels like Hanson’s been on the prospect radar for ages, it’s because he has. Originally signed out of the Dominican way back in 2009, he began gracing top-100 lists after a .309/.381/.528 showing in Low-A back in 2012. Despite his lengthy minor-league tenure, Hanson still has youth on his side. He’ll will play the entire 2016 season as a 23-year-old. Read the rest of this entry »

We are thrilled to announce that Eric Longenhagen is re-joining the FanGraphs staff and will serve as our lead prospect analyst going forward. Eric brings experience, insight, and determination into this job, and we’re excited to see what he’ll be able to do with our prospect coverage both now and in the future.

I’m Eric Longenhagen, and I’m very excited to be joining the FanGraphs staff and seizing the reins of full-scale prospect coverage here. I’ve been ramping up toward a role like this for eight years, and am looking forward to wrestling with the enormity of this job’s scope and the processes that must be built and polished to do it well. Perhaps the most attractive aspect of writing, in lieu of working for a Major League team, is the boundless diversity of baseball at your fingertips. I hope to cover and share with you the entire spectrum, from the rapidly approaching international signing period, to the draft and, of course, off-season analysis of each club’s farm system.

If you’re interested in my work history and in inferring my credentials therefrom, this paragraph is for you. I spent my college summers interning for the Phillies’ Triple-A affiliate. My duties were expansive and mostly menial, which is why I often skirted them in favor of slipping into the scout section to watch, listen and learn. I then spent two seasons doing video scouting at Baseball Info Solutions. During that time I began scouting and reporting on the Phillies farm system for Crashburn Alley. When I left Pennsylvania for Arizona’s oppressive heat in 2014, and could no longer properly scout the Phillies system, I bounced around. My work appeared at Sports on Earth, Jason Churchill’s Prospect Insider and then here at FanGraphs as part of the staff assembled by Kiley McDaniel. Early in the spring of 2015, ESPN brought me on to supplement its scouting and prospect content with a focus on the draft, and gave me the keys to their International coverage as well.

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The Yankees have called up 23-year-old Dominican-born catching prospect Gary Sanchez from the minor leagues. Sanchez was off to an excellent start in Triple-A this year, slashing .288/.336/.541 in 27 games. Heading into the year, he ranked 21st on KATOH’s top 100 list, second to only Chance Sisco among catchers. Sanchez’s 2016-to-date performance has only served to improve his prospect stock. He figures to serve as New York’s designated hitter for the time being with Alex Rodriguez on the shelf. Read the rest of this entry »

Due to a fractured thumb, the Royals will be without Mike Moustakas for at least the next few weeks. No doubt, Kansas City will miss their three-plus win, All-Star third baseman. But as is often the case in baseball, one man’s misfortune is another’s opportunity. In this instance, the beneficiary is Cheslor Cuthbert, whom the Royals recalled from the minors to replace Moustakas.

Unless you’re a Royals fan or a prospect connoisseur, you might have no idea who Cheslor Cuthbert is, but my nerdily-sorted spreadsheets really like the Nicaraguan infielder. Last year, he hit .277/.339/.429 as a 22-year-old in Triple-A. He also struck out in an encouragingly low 14% of his trips to the plate. He already looks like a Royal.

That performance, along with the fact that he plays primarily third base — a somewhat premium defensive position — landed Cuthbert at 74th on KATOH’s preseason top-100 list, placing him tops among Royals farmhands. That was before he opened this season by slashing .333/.402/.624 in 24 games. He was one of the very best hitters at Triple-A over the season’s first month, and was quite possibly the best prospect-age hitter in Triple-A.

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Heading into the season, there were a lot of question marks about the Dodgers rotation, but so far, the team’s struggling offense and bullpen have received a big boost from a pitching staff led by Clayton Kershaw and Kenta Maeda; their starters currently rank fifth in WAR. Ross Stripling has been a nice early surprise for the team, and while Alex Wood’s ERA remains too high, his underlying metrics suggest that he still can help the team. Scott Kazmir’s struggles are perhaps most worrisome, but if he can stop giving up home runs, he should be serviceable as well.

And if any of the big leaguers falter, there is help on the way. In the minors, Jose De Leon made his first start of the 2016 season on Tuesday, the delay being partly due to a minor ankle injury and also the product of an effort to keep his innings low in the early going. When de Leon’s debut came the day before Julio Urias’ most recent start, I decided to watch both via MILB.tv.

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Jose Berrios has a 6.75 ERA. His FIP is 5.63. He’s walked 16% of the batters he’s faced this season. He’s averaging more than 20 pitches per inning, and in two starts he has completed just 9.1 innings. He also has three good, major league-quality pitches with the potential for a fourth. He’s struck out more than 30% of the batters he’s faced. He could win Rookie of the Year, and — with arguments to come from Lucas Giolito, Tyler Glasnow, Alex Reyes, Blake Snell, and Julio Urias — he might be the most exciting pitcher to make his big-league debut this season.

Berrios doesn’t turn 22 until the end of the month, but he has ridden a quick and steady ascent to the majors. In 2014, he dominated High-A and held his own in a handful of starts at Double-A. Kiley McDaniel ranked him the 24th-best prospect in baseball during the 2014-15 preseason before he proceeded to mow down opponents in Double-A and Triple-A, striking out more than 25% of batters at both levels and walking less than 6% of them. Berrios entered Spring Training with an outside shot to win a starting job, but struggled with command in both his major-league and minor-league games.

In three minor-league starts this year, Berrios still produced his share of walks. But also struck out 20 of the 66 batters he faced and allowed just three runs, earning a promotion when Ervin Santana hit the disabled list. His first two starts have been a mixed bag, featuring both flashes of the potential that make him a top prospect with a comp to Pedro Martinez and show how he can be successful in the big leagues, but also an inability to consistently attack hitters in the strike zone, leading to unfavorable counts and walks.

The chart below shows league-average plate-discipline numbers as well as Berrios’ own numbers over his first two starts.

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As Susan Slusser with the San Francisco Chronicle reported on Wednesday, Sean Manaea will be called up to start Friday’s game in Oakland against Mike Fiers and the Houston Astros. Manaea made a decent case for making the rotation out of spring training, tallying 16 strikeouts in 14.1 innings, but the seven walks allowed over the same period gave the A’s enough reason to start him in Triple-A Nashville.

Across three starts in Nashville, he has been lights out on the mound. Only three runs have crossed the plate against him in 18 innings pitched, while 21 batters have struck out and just four have reached via free passes. That level of performance was enough for Oakland to feel comfortable bringing him up to the majors in lieu of a fourth appearance for the Sounds. But what can we expect from him out of this start, and (presumably) those going forward in an A’s uniform?

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Last week, lead prospect analyst Dan Farnsworth published his excellently in-depth prospect list for the Washington Nationals, which concluded his “Evaluating the Prospects” series. Previously, Baseball America published their top 100 prospects list, as did Baseball Prospectus (top 101), Keith Law, MLB.com and newcomer 2080 Baseball (top 125). Additionally, I put out KATOH’s top-100 list back in January. All of these works attempt to accomplish the very same goal: identifying and ranking baseball’s best prospects. But KATOH goes about it in a very different way than the others. While most others rely heavily on scouting, KATOH relies exclusively on statistical performance.

On the whole, there’s a good deal of agreement between KATOH and the more traditional rankings. Many of KATOH’s favorite prospects have also received praise from real, live human beings who’ve watched them play. JP Crawford, Corey Seager, Orlando Arcia and Julio Urias all fall within this group. However, there are other KATOH favorites who’ve received very little attention from prospect evaluators. The purpose of this article is to give these prospects a little bit of attention.

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