As you might have heard, the Red Sox traded Rafael Devers to the Giants earlier this week. In my breakdown of the deal, I ranked the players headed to Boston in the order of my interest in them: James Tibbs III, Kyle Harrison, Jose Bello, and lastly Jordan Hicks, though that’s contract-related, as I think he’s probably the best current player of the four. The next day, someone in my chat asked me why I preferred Tibbs to Harrison – was I particularly high on Tibbs, or particularly low on Harrison? After all, Harrison was a consensus top 50 prospect only a year ago, while Tibbs took his first Double-A at-bats this week.

My initial answer was that I saw Harrison several times last year, and he didn’t really do it for me. Combine that with his uninspiring results and the fact that other prospects had squeezed him out of the Giants rotation, and I preferred Tibbs. Since neither guy is clearly ready to dominate the major leagues right now, give me the higher-variance unknown quantity.

When I stopped to think about it later, though, I decided that my answer wasn’t good enough. Right now, I’m knee-deep in spreadsheets, linear regressions, non-linear regressions, projections, scouting reports, basically every type of baseball data out there as I do some initial work on our annual Trade Value Series, which will run next month. I have tons of prospect data stored up. I even looked into how prospect grades translate into major league players earlier this year. Rather than try to re-evaluate Harrison based more or less on vibes and ERA, I decided to apply a bit of analytical rigor now that I wasn’t writing for a deadline. Read the rest of this entry »

Max Fried is one of the best pitchers in baseball. Now in his ninth big league season, and his first with the New York Yankees after eight with the Atlanta Braves, the 31-year-old southpaw is 9-2 with a 1.89 ERA over 95 innings. His career marks are impressive as well. Since debuting in August 2017, Fried has a 2.96 ERA and 3.25 FIP to go with a sparkling 82-38 record. His .683 winning percentage ranks behind only Clayton Kershaw (.695) among active pitchers with at least 100 decisions.

When our 2015 Atlanta Braves Top Prospect list was published in January of that year, Fried was coming off a 2014 season that saw him miss the first three months with forearm soreness and throw just 10 2/3 innings in the low minors before undergoing Tommy John surgery in July. Acquired by Atlanta from the San Diego Padres shortly before our list went up, the seventh overall pick in the 2012 draft was ranked third in the Braves system by Kiley McDaniel, then our lead prospect analyst.

What did Fried’s 2015 FanGraphs scouting report look like? Moreover, what does he think about it all these years later? Wanting to find out, I shared some of what McDaniel wrote and asked Fried to respond to it.

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“The 6-foot-4, 185 pound lefty was half of what may have been the best one-two punch in high school baseball history, with Nationals top prospect RHP Lucas Giolito at Harvard Westlake High School in 2012.”

“It was definitely a good little thing,” replied Fried. “It didn’t mention that Jack Flaherty was in there, too. He was probably a better performer in high school than both of us. His stats blew mine and Lucas’ out of the water.”

“Scouts were concerned going into the 2012 draft spring about the unusually high volume of pitches with limited down time on the high school’s pitching program.” Read the rest of this entry »

Below is an analysis of the prospects in the farm system of the Minnesota Twins. Scouting reports were compiled with information provided by industry sources as well as our own observations. This is the fifth year we’re delineating between two anticipated relief roles, the abbreviations for which you’ll see in the “position” column below: MIRP for multi-inning relief pitchers, and SIRP for single-inning relief pitchers. The ETAs listed generally correspond to the year a player has to be added to the 40-man roster to avoid being made eligible for the Rule 5 draft. Manual adjustments are made where they seem appropriate, but we use that as a rule of thumb.

A quick overview of what FV (Future Value) means can be found here. A much deeper overview can be found here.

All of the ranked prospects below also appear on The Board, a resource the site offers featuring sortable scouting information for every organization. It has more details (and updated TrackMan data from various sources) than this article and integrates every team’s list so readers can compare prospects across farm systems. It can be found here. Read the rest of this entry »

Two months ago, I checked in on Oneil Cruz, the center fielder. Things weren’t exactly going well. The Pirates shifted Cruz from shortstop to center at the end of the 2024 season, and the early returns were so discouraging I felt the need to write about the experiment just 17 games into the 2025 season. Here’s where the numbers stood at that point:

Cruz is currently sitting on -8 DRS, -2 OAA and FRV, and -0.1 DRP. Among all outfielders, those numbers respectively rank worst, third worst, fourth worst, and fifth worst. The advanced defensive metrics work on different scales and they often disagree, but on this point they are unanimous: Cruz has been one of the very worst outfielders in all of baseball this season. According to DRS, Cruz is the least-valuable defender in baseball, full stop.

There’s great news, though. Last week, reader AJ wrote into our newly introduced mailbag to ask for an update, because Cruz’s stats look totally different now. I decided the turnaround was worthy of a full article instead of a few paragraphs. I’ve broken everything down with my first article as the dividing line. There’s a chasm between Cruz’s first 17 games and his last 48.

Deserved Runs Prevented is inherently more conservative than the other defensive metrics, but all of the advanced numbers agree Cruz has completely turned things around over the past two months. He hasn’t just stopped racking up negative numbers, he’s dug himself all the way out, grading as a net positive in every metric except Defensive Runs Saved. Over the past two months, they pretty clearly see him as one of the better defenders in the league. Put that together with career-best hitting and baserunning numbers, and Cruz is on pace for a career year. Read the rest of this entry »

On Monday night in Los Angeles, Shohei Ohtani made his first major league start for the Dodgers. For any other starter signed before the 2024 season, that would be a disastrous sentence to type. Ohtani, of course, became the charter member of the 50/50 club, won the National League MVP, and then helped his team win the World Series. But he came to the Dodgers to hit and pitch, not just to play DH, and last night marked a key step in that process, his first game action as he rehabs from a 2023 elbow surgery.

I watched every pitch of Ohtani’s one-inning outing to compile a report. Obviously, these are the observations of a data analyst, not a scout. I’ve supplemented them with the Statcast and pitch model data generated overnight. I’m not the type to ignore the numbers, but realistically speaking, 28 pitches isn’t enough for a real sample, so the data is more supporting than primary. I’ll start with my first impressions, walk through each of the four pitch types Ohtani threw, and then share some general conclusions. Read the rest of this entry »

Below are two changeups. Can you tell which one is better?

First up is Griffin Jax’s power changeup. He throws it over 92 mph; at two inches of induced vertical break (IVB) and 15 inches of arm-side run, it almost resembles a filthy left-handed slider:

Second is Hunter Gaddis straight change, floating up to the plate with 10 inches of IVB at an average velocity of 78 mph:

So, which one would you take? That’s a bit of a trick question: By whiff rate, these two pitches are virtually identical. Jax’s changeup ranks second in all of baseball with a 57.3% whiff rate; Gaddis’ is right behind him in third. Stylistically, they’re opposites; by the results, they are indistinguishable.

If you were creating the perfect fastball or the perfect slider in a video game, it’d be a straightforward process. Crank up the velocity, max out the vertical break, and those pitches will generally improve in a roughly linear fashion. Not so with changeups. Pitch models struggle to accurately grade these pitches because their quality can’t as easily be captured by velocity and movement in a vacuum. The Cole Ragans changeup, for example, gets a roughly average grade by Stuff+ despite performing like the best changeup in the sport over the last handful of seasons. It’s slow, and it barely moves — what makes it so good?

Thanks to new data from Baseball Savant, I think the answer might soon be clear. Read the rest of this entry »

Look, I’ll just get right to it:

The San Francisco Giants are acquiring Rafael Devers from the Boston Red Sox for Jordan Hicks, Kyle Harrison and more, according to sources familiar with the deal.

— Robert Murray (@ByRobertMurray) June 15, 2025

That’s the kind of blockbuster you don’t see every day. Rafael Devers is the best healthy Red Sox hitter. The Sox are above .500 and in the thick of the AL playoff hunt. They’re desperate for offense – though they came into the year with more hitters than spots, injuries to Alex Bregman, Triston Casas, Wilyer Abreu, and Masataka Yoshida have left them scrambling for depth. Abraham Toro has been batting high in the order of late. Romy Gonzalez is their backup DH. And they just traded their starting DH – hitting .271/.400/494, good for 14 home runs and a 145 wRC+ – for salary relief? We’re going to need a deeper dive.

Let’s start with the return. The Sox sent Devers and his entire contract – 10 years and $313.5 million at time of signing, with about $250 million and 8.5 years left on it today – to the Giants. In exchange, they got a wide mixture of players. There’s a major leaguer, Jordan Hicks. There’s a recently graduated prospect, Kyle Harrison. There’s a well-regarded hitting prospect, James Tibbs III. There’s another, further away prospect, pitcher Jose Bello. Finally, there’s that sweet, sweet financial flexibility, something the Sox are no stranger to.

If you look at baseball completely in the abstract, with bean-counting surplus value as your only guiding light for evaluating a trade, this one looks reasonable enough. Devers is under contract for a lot of years at a lot of dollars per year, and projection systems consistently think that he’ll generate low WAR totals for his salary in the back half of his deal. Harrison was a top 25 prospect not so long ago. Tibbs was a first round draft pick last year. Bello is an interesting lottery ticket. Hicks – okay, Hicks might have been a salary offset. But the point is, it’s likely that if all you care about is WAR accrued per dollar spent, the Sox come out ahead on this deal for most reasonable models of surplus value. Read the rest of this entry »

Jake Mangum is impressing as a 29-year-old rookie. Seven years after being drafted by the New York Mets out of Mississippi State University following four collegiate seasons, the switch-hitting outfielder has slashed .303/.346/.370 with a 109 wRC+ over 128 plate appearances with the Tampa Bay Rays. Moreover, Mangum has swiped 10 bags without being caught.

His path to pro ball included being bypassed in the draft out of high school, then opting not to sign after being a low-round pick following his sophomore and junior seasons. One of the teams that called his name didn’t make an offer so much as wish him well. “Good luck with school next year,” was their message to the high-average, low-power Bulldog.

Mangum went to finish his college career with a .357/.420/.457 slash line, as well as a Southeastern Conference-record 383 hits. He also finished with a degree in business administration — although that’s not something he expects to take advantage of down the road. Paying days have a shelf life, but he plans to “stay around the game forever.”

A lack of balls over fences contributed heavily to the limited interest he received from scouts. When he finally inked a contract, the 2019 fourth-rounder had gone deep just five times in 1,200 plate appearances.

“It was always the power piece,” explained Mangum, whose ledger now includes 24 home runs in the minors and one in the majors. “They just didn’t see it playing in professional baseball, my not having enough power. I’m stronger now, but to be honest with you, I don’t try to hit home runs. I try to hit for a high average and help the team with good defense and base running.”

Kevin Cash sees Mangum’s skillset as old-school. Read the rest of this entry »

It was a beautiful night here in Brooklyn on Wednesday, and although I couldn’t make it to Citi Field in time for Mets-Nationals, I decided to go for a long walk and then stop at a local sports bar to read and watch some baseball. Naturally, the Mets were on one of the TVs behind the bar, while the other was reserved for the Yankees, who were set to play the Royals a little while later. That was a bummer for the two Red Sox fans sitting next to me, Mike and Kathleen, but they were resourceful. The bar has free wifi, so Mike pulled up Boston’s game against the Rays on his phone. He and Kathleen didn’t know one another, but they recognized each other as fellow Sox fans from the weekend prior, when they were both at the same bar to watch Yankees-Red Sox. He moved over to the stool between Kathleen and I, so that she and her partner Harry could also watch the game. The four of us started talking, and it turns out Harry and I went to the same high school, though he graduated four years ahead of me. Small world!

Anyway, sometime between Marcelo Mayer’s first and second home run of the game, Kathleen said to me, “The best thing about Red Sox fans is we simultaneously love and hate the Sox, and we love to hate them, too.” I bring this up because I thought about her description of Boston fans as I sat down to answer the first question in this week’s mailbag.

We’ll get to that in a moment, but before we do, I’d like to remind all of you that while anyone can submit a question, this mailbag is exclusive to FanGraphs Members. If you aren’t yet a Member and would like to keep reading, you can sign up for a Membership here. It’s the best way to both experience the site and support our staff, and it comes with a bunch of other great benefits. Also, if you’d like to ask a question for next week’s mailbag, send me an email at mailbag@fangraphs.com. Read the rest of this entry »

Below is an analysis of the prospects in the farm system of the Seattle Mariners. Scouting reports were compiled with information provided by industry sources as well as my own observations. This is the fifth year we’re delineating between two anticipated relief roles, the abbreviations for which you’ll see in the “position” column below: MIRP for multi-inning relief pitchers, and SIRP for single-inning relief pitchers. The ETAs listed generally correspond to the year a player has to be added to the 40-man roster to avoid being made eligible for the Rule 5 draft. Manual adjustments are made where they seem appropriate, but we use that as a rule of thumb.

A quick overview of what FV (Future Value) means can be found here. A much deeper overview can be found here.

All of the ranked prospects below also appear on The Board, a resource the site offers featuring sortable scouting information for every organization. It has more details (and updated TrackMan data from various sources) than this article and integrates every team’s list so readers can compare prospects across farm systems. It can be found here. Read the rest of this entry »