When he was first featured here at FanGraphs three years ago, I wrote that Nestor Cortes “barely registers a blip on the national radar.” With his multiple windups in mind, I called the then-24-year-old southpaw “probably the most unique member of the 2019 New York Yankees.”

A lot has changed since that time. Cortes is still unique — the funkiness and deceptive deliveries remain part of his M.O. — but he’s otherwise a much different pitcher. He’s also become a household name. Traded to Seattle in November 2019, Cortes returned to New York in free agency prior to last season and has since been remade into one of the top starters in the American League. A first-time All-Star with a 2.63 ERA and 99 strikeouts in 95-and-two-thirds innings, Cortes attacks hitters with a different arsenal than the one he employed as an obscure reliever.

How has Cortes evolved, and just as importantly, can he continue to thrive if he doesn’t evolve further? Yankees pitching coach Matt Blake addressed those questions when the team visited Fenway Park earlier this month.

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David Laurila: You’ve obviously been asked about Nestor Cortes numerous times already this season. That said, why has he been so good?

Matt Blake: “When he first started going last year, the league didn’t really know who he was. I mean, they knew of Nestor, but they hadn’t necessarily seen this version of him, where there’s a little bit more velocity [and] the fastball has kind of a true riding profile, one that’s a little bit closer to cut than run. And then the cutter off of that creates a really tough visual for hitters to identify. He’d also added the sweeper slider to be able to slow guys down and steal some strikes. Read the rest of this entry »

Robert Gasser is emerging as one of the most promising pitching prospects in the San Diego system. Over his last six starts with the High-A Fort Wayne TinCaps, the 23-year-old southpaw has fanned 47 batters while allowing just six earned runs in 36-and-two-third innings. On the season, Gasser has a 3.76 ERA to go with a 3.09 FIP; the latter is the third-best mark in the Midwest League.

He isn’t the same pitcher the Padres drafted 71st overall last summer out of the University of Houston. Gasser still throws from a low three-quarters slot, but his arsenal has changed, and to a certain extant, so has his attack plan. Armed with a more diverse mix that includes tweaked grips, the 6-foot-1 El Dorado, California native doesn’t believe in being bland.

Gasser — No. 14 on our San Diego Padres Top Prospect list — discussed his evolving arsenal in late June.

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David Laurila: What is your M.O. on the mound? In other words, how do you get guys out?

Robert Gasser: “Honestly, just keeping them off balance. I think that’s the most important thing for me. Throwing all of my pitches in the strike zone consistently gives me an opportunity to miss barrels while I’m changing speeds and location.” Read the rest of this entry »

Jay Groome has experienced a lot of ups and downs since being drafted 12th overall by the Boston Red Sox out of a New Jersey high school in 2016. The now-23-year-old southpaw had Tommy John surgery in 2018, and his career mark as a professional includes an 11-22 record with a 4.50 ERA over 240 innings.

Groome’s future nonetheless remains promising. Ranked 13th on our Red Sox Top Prospects list coming into the current campaign, the 6-foot-6, 265-pound former first-rounder has a 3.52 ERA and has allowed just 58 hits (with 81 strikeouts) in 76-and-two-thirds innings with the Double-A Portland Sea Dogs. Moreover, he has a more diversified arsenal and a better feel for how to attack hitters than he’s had in previous seasons.

Groome discussed his evolution as a pitcher, and the hurdles he’s overcome along the way, earlier this summer.

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David Laurila: When I first interviewed you in 2017, I asked where you were in terms of transitioning from a thrower to a pitcher, and your response was that you “100% know how to pitch.” Looking back, how accurate was that?

Jay Groome: “That was probably just my younger self trying to be honest. But I’ve added two more decent pitches since then, and I’m trying to throw all of them in the zone. I can fairly say now that I’m pitching a lot more than throwing.” Read the rest of this entry »

Jason Foley has emerged as one of the most reliable members of the Detroit Tigers bullpen, and learning that his four-seam fastball profiled poorly is a big reason why. The 26-year-old right-hander switched to a sinker, and the results speak for themselves. Since debuting with Detroit last June, Foley has a 2.79 ERA and a 3.54 FIP over 36 relief appearances comprising 38-and-two-thirds innings. Throwing his worm-killer 53.9% of the time, he’s logged a 55.3% groundball rate.

Foley, whom the Tigers signed out of Sacred Heart University in 2016, discussed his career-changing repertoire tweak at Fenway Park in late June.

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David Laurila: You’ve gone from a non-drafted free agent out of a low-profile college program to a pitcher performing at a high level in the big leagues. How did that happen?

Jason Foley: “I get asked that quite a bit, like — ‘You weren’t good enough to get drafted, so how are you now here?’ — and I think a lot of people are looking for one magic answer, or maybe one magic change that I’ve made. But neither of those are true. It really just stems from hard work and consistency, and from all of the little things that help you get 1% better every day.” Read the rest of this entry »

Darick Hall was an under-the-radar prospect when he was first featured here at FanGraphs in June 2018. A 14th-round pick two years earlier out of Dallas Baptist University, the 6-foot-4, 235-pound first baseman went into that season unranked. That part of his profile hasn’t changed. Hall logged a 101 wRC+ in Triple-A last year, and came into the current campaign once again absent from most prospect lists.

He’s proceeded to crush expectations. The now-26-year-old slugger earned his first big league call-up on Wednesday, this after bashing 20 home runs with a 132 wRC+ at Triple-A Lehigh Valley. Last night, in just his second game, Hall launched a pair of home runs in a 14-4 Phillies win over the Atlanta Braves.

Hall discussed his evolution as a hitter late in spring training.

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David Laurila: How have you evolved as a hitter since we talked four years ago?

Darick Hall: “It’s changed, but at the same time, it hasn’t changed much. I had been learning how to hit line drives more. Coming into pro ball, if the ball wasn’t up, I would drive it into the ground, because I would come over the top. Through the years, I’ve learned how to… I have a flat path, right? I don’t really have that vertical barrel, up through, so I had to learn how to use my legs to go down and get level with that ball to where I can hit it on a line. Obviously, sometimes I’ll drive it up for [home runs].” Read the rest of this entry »

George Kirby is off to a solid start in Seattle. Since debuting with the Mariners in early May, the 24-year-old rookie right-hander has a 4.04 ERA and a 4.73 FIP (numbers that were markedly better before last night’s career-worst outing) to go with 49 strikeouts in 53 innings. Lending credence to scouting reports — our Eric Longenhagen lauded not only his high-octane heater, but also his plus-plus control — Kirby has issued just seven free passes.

Drafted 20th overall in 2019 out of Elon University, Kirby ranked No. 3 on our 2022 Seattle Mariners top prospects list. Kirby discussed his early career development, including what he’s learned from analytics, earlier this month.

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David Laurila: You’ve had access to a ton of information playing in the Mariners’ system. What are some of the ways you approach pitching differently than you did just a few years ago?

George Kirby: “One thing I’ve really tried to hammer on is being location-based. I look at the analytics for certain pitches. With my slider, for instance, there is my release point and the horizontal movement. There are good tools to see where you’re at and kind of how to manage your off-speed. I’m always looking at that stuff.”

Laurila: By location-based, I assume you’re referring to how your pitches play best in certain zones?

Kirby: “Yes. With the Mariners, we have our ‘green clouds,’ which show the best pitch in that location in certain counts. I try to really focus on that. And one of the biggest numbers is that 94% of the time when you throw a first-pitch strike, you’re either getting the ball back 0–1 or it’s an out. That’s a huge part of pitching — not being scared of the zone and allowing that first pitch to work in your favor.” Read the rest of this entry »

Brendan Donovan knows who he is as a hitter. The St. Louis Cardinals rookie is at his best when he’s hunting line drives, and that approach has been working like a charm. Two months into his big-league career, the 25-year-old is slashing .315/.426/.448 — with 14 doubles and one home run — in 197 plate appearances. Moreover, his 146 wRC+ is tops among qualified first-year players.

A left-handed hitter whom the Cardinals selected in the seventh round of the 2018 draft out of the University of South Alabama, Donovan is coming off a 2021 season that saw him climb from High-A to Triple-A, then excel in the Arizona Fall League. That meteoric rise continued this spring. Donovan earned a promotion to St. Louis in late April, and all he’s done since arriving is spray line drives. It’s what he does.

Donovan discussed his swing and approach when the Cardinals visited Fenway Park earlier this month.

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David Laurila: How have you developed as a hitter since coming into pro ball?

Brendan Donovan: “We made a change in our hitting department — Jeff Albert, Russ Steinhorn, and those guys came in — and I was someone that made contact, but it wasn’t always quality contact. What we did is put me into a better body posture, better positioning, more tilt over the plate. I learned how to load the back hip a little better and flatten out my path. From there, it’s basically, ‘Let’s just try to get on plane, and see how long we can stay on plane.’ That’s helped me with fastballs up, and given me more adjustability on breaking balls and changeups, because I’m in the zone longer. Read the rest of this entry »

MLB history includes 54 players born in the state of New Hampshire. Cody Morissette is hoping to become the 55th. A 22-year-old infielder who was drafted 52nd overall last year out of Boston College, Morissette is No. 11 on our newly-released Miami Marlins Top Prospects list.

A Manchester native who attended high school in Exeter, Morissette excelled at the collegiate level — he posted a .337/.400/.507 slash line in his three seasons as an Eagle — while being overshadowed by a high-profile teammate. Sal Frelick, himself a native New Englander, was taken 15th overall last year by the Milwaukee Brewers.

Morissette, who is slashing .232/.314/.444 with 12 home runs for the High-A Beloit Sky Carp, touched on his New Hampshire roots, and his big league aspirations, earlier this week.

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Morissette on his three-homer game on June 17:

“That was a special night for me. Along with being able to help the team win, it was really cool to hit three home runs, because it’s the first time I’ve done it on a big diamond. Baseball is a weird game. The night before, I was 0-for-5 with five strikeouts. I wanted to come back the next day and respond in a good way, and three home runs was definitely a good way to respond.”

On reports that he projects as hit-over-power: Read the rest of this entry »

Kevin Youkilis could swing the bat. In 10 big league seasons, the player immortalized in book and movie form as “The Greek God of Walks” logged a .281/.382/.478 slash line and a 127 wRC+. At his peak, he was one of the best hitters in the American League. From 2008-10, Youkilis averaged 25 home runs annually while putting up a .308 batting average and a 150 wRC+. Over that three-year stretch with the Boston Red Sox, he walked 197 times and stroked 429 base hits.

In the latest installment of our Talks Hitting series, Youkilis — now a part-time analyst on Red Sox TV broadcasts — discussed the art and science of what he did best: squaring up baseballs.

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David Laurila: Let’s start with the nickname you got early in your career. Looking back, what do you think of it?

Kevin Youkilis: “It was interesting more than anything. It’s not something I equated to. I saw myself as a hitter, and the walks just a byproduct of not getting good pitches. Part of the game is that you walk if you don’t get pitches to hit.

“At the beginning, it was a lot of… it was kind of crazy. There were all these media-driven things coming my way. That was the hardest part. I was like, ‘Wait, what?’ It was all fixated on walking, versus the other things I did well.” Read the rest of this entry »

Kyle Bradish has a promising future in Baltimore. The 25-year-old rookie right-hander has a 6.86 ERA and a 6.06 FIP over his first 42 big league innings, but he’s also got plus stuff and improving command. Acquired from the Angels in the December 2019 Dylan Bundy deal — Los Angeles had taken him in the fourth round of the previous year’s draft out of New Mexico State University — Bradish came into the current campaign ranked seventh on our Orioles Top Prospects list.

Bradish discussed his developmental path, and the M.O. he takes with him to the mound, when Baltimore visited Fenway Park in late May.

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David Laurila: What do you know about pitching now that you didn’t when you entered pro ball?

Kyle Bradish: “A lot of it is the analytics, which we didn’t have to the same extent when I was in college. I’m getting adjusted to that, learning about things like spin efficiency and all that stuff.”

Laurila: How much of it is impacting what you’re doing on the mound? Read the rest of this entry »