Geraldo Perdomo is not leaving Arizona any time soon. On Monday night, Mike Rodriguez reported that the Diamondbacks and their switch-hitting shortstop had agreed to a contract extension, which is for four years and $45 million, includes a club option for a fifth season, and starts in 2026, according to ESPN’s Jeff Passan. The 25-year-old Perdomo has just over three years of big league service time, so the deal will buy out his final two arbitration seasons and at least the first two years after he would’ve reached free agency. Perdomo was an All-Star in 2023, and he put up 2.0 WAR in 2024 despite an April knee injury that limited him to 98 games. He’s now set to spend the entirety of his 20s providing the Diamondbacks with a throwback blend of solid shortstop defense and an absolute refusal to swing the bat.

Perdomo got a cup of coffee in 2021 and played his first full season in 2022, running a 59 wRC+ that limited him to just 0.3 WAR. In 2023, he earned an All-Star nod on the back of a torrid, BABIP-fueled start that saw him with a 200 wRC+ on May 3. He quickly came back to earth, but ended up running a 117 wRC+ in the first half and a 74 wRC+ in the second half, for an overall mark of 98 and 2.3 WAR. Perdomo missed just over two months due to a torn meniscus in 2024, but he put up a 101 wRC+ and his second straight two-win season. Essentially, he’s been a bit better than league average for two seasons now, and that was enough to convince Arizona to lock him down for the entirety of his prime. Perdomo and the Diamondbacks had already avoided arbitration by agreeing on a $2.55 million salary for 2025, and the new deal will add a $5 million signing bonus to that. He’ll receive a $5 million salary in 2026, then $8 million in 2027, $11 million in 2028, and $13 million in 2029. The Diamondbacks also have a $15 million club option for 2030, with a $3 million buyout should they choose not to exercise it. There are also incentives for a top-10 finish in the MVP voting.

That’s a pretty big commitment, even bigger when you consider the fact that the Diamondbacks have shortstop Jordan Lawlar, whom Eric Longenhagen just ranked our 14th overall prospect. Let’s talk about why the Diamondbacks feel Perdomo is worth extending, even if it means blocking the best prospect in their system.

Personally, I think Perdomo is one of the most fascinating players in the game. He came up as a glove-first shortstop prospect, and he certainly looks the part, but the advanced defensive metrics have been split on his performance for his entire career.

For his first two seasons, DRS thought he was costing the Diamondbacks runs. Then in 2024, the season when he missed time due to a major leg injury, it thought he was one of the best shortstops in baseball. Statcast has pretty much seen him as neutral throughout his three-year career, while DRP thinks he’s been great with the exception of 2023. Clearly, though, the Diamondbacks believe in his defense.

On offense, Perdomo is just plain weird. I know I summarized his overall offensive performance earlier, and those numbers are pretty standard – he’s been right around league average for two straight seasons – but it’s important to understand how he got to those numbers. For starters, Perdomo cannot stop bunting. Over the past three seasons, Perdomo has laid down 66 bunts, the most in baseball. His 33 sac bunts are also the most in the game; only three other players have even reached 20. His 15 bunt hits rank eighth, but among the 61 players with at least six bunt hits over that period, his 23.8% bunt hit rate ranks dead last. Even more damning, he leads baseball with 52 foul bunts. According to Baseball Savant, those fouls have cost the Diamondbacks four runs. That’s the worst number in baseball.

The bunting is genuinely a problem, but it fits perfectly with Perdomo’s overall approach at the plate, because that approach could be best summed up as “Try with all your might to avoid swinging.” Perdomo is one of the most passive players in all of baseball. Our database goes back to 2002, and since then, Perdomo’s 39.2% swing rate ranks 48th out of the 1,129 batters with at least 1,000 plate appearances. That puts him in the fifth percentile. Over the past three seasons, it’s the sixth-lowest mark in the game. Perdomo is the exact kind of player whom Robert Orr’s SEAGER metric was built to expose. In 2024, SEAGER had him in the 77th percentile in terms of selectivity, but it put him in the second percentile in terms of taking hittable pitches. In other words, Perdomo’s unwillingness to swing at strikes is way more extreme than his ability to lay off balls.

Keep in mind that SEAGER was meant to assess a player’s ability to do damage, and, well, that’s just not Perdomo’s game. He runs some of the lowest contact quality numbers in baseball. However, he makes tons of contact. Not only that, but over the past two seasons, he’s run a foul rate of nearly 43%, one of the higher marks in the game. It’s nearly impossible to get him to swing and miss, even when he swings and doesn’t put the ball in play. So even though pitchers attack the zone like crazy, he runs excellent walk and strikeout rates. If I’m making it sound like every single part of Perdomo’s game is at one extreme or another, well, yeah, that’s pretty much how it is. His Baseball Savant sliders are either bright red or bright blue. He’s all patience, no power. He’s the rare player who runs an incredible squared-up rate but an unimpressive line drive rate. Because Perdomo puts tons of balls in play, he’ll always have the chance at posting a great BABIP and putting up a three- or four-win season, but unless he decides to try attacking the ball, there’s not much ceiling here.

I am so, so curious to see what it would look like if Perdomo were to start attacking the ball. He’s still young, and I really do think it’s possible that he has the capacity to be more than an average hitter. I’m sure the Diamondbacks remember clearly how well it worked out when he was pulling everything in sight at the beginning of the 2023 season, and maybe they’ll try to help him become that player again. Still, I don’t think we should expect that going forward. I think the Diamondbacks are paying for floor rather than ceiling. However he gets there, if Perdomo keeps performing like a two-win player, the contract will work out well for both sides. If he can remain a solid defender and a league-average bat, he’s a really useful player, even if he pushes Lawlar to third base. In the meantime, we all get to enjoy watching Perdomo live at the extremes in order to perform right at the mean.

With a 115 wRC+, the 2024 Orioles were the best offensive team in franchise history, outperforming even the most dominant Baltimore lineups from the 1960s, 70s, and 80s. Their 115 wRC+ was also good for second in the AL last season, trailing only their pennant-winning division rivals in New York. A couple thousand miles away, the Diamondbacks also finished with a best-in-franchise-history 115 wRC+. That wRC+ was good for second in the National League, trailing only Arizona’s World Series-winning division rivals in Los Angeles. How’s that for symmetry?

On Tuesday, the Birds and the Snakes continued to parallel one another, at least as far as their lineups are concerned. In the afternoon, the Orioles announced they had signed righty-batting outfielder Ramón Laureano, reportedly to a one-year, $4 million deal. Not long after, the D-backs confirmed they had re-signed righty-batting outfielder Randal Grichuk, reportedly for one year and $5 million guaranteed. Both deals also come with options for 2026. Laureano’s is a $6.5 million team option, while Grichuk’s is a $5 million mutual option with a $3 million buyout. His salary for 2025 is technically only $2 million, with that buyout making up the rest of his $5 million guarantee. There was a time when both Laureano and Grichuk were promising, multi-talented, everyday players. These days, however, they’ve each become role players with two primary jobs: handle a part-time gig in the outfield and hit well against left-handed pitching. That should be exactly what the Orioles and Diamondbacks ask them to do in 2025. Read the rest of this entry »

Ketel Marte was one of the best 10 hitters in baseball in 2024. That’s just an objective fact – or at least as objective as facts can get in baseball. Our calculation of WAR? He was 10th among hitters. Baseball Reference has him 10th as well. Baseball Prospectus put him in seventh place. That’s not surprising; he set career highs in home runs, league-adjusted OBP and slugging, and wRC+. He played solid defense and even added a little value on the basepaths.

He was one of the best 10 hitters in baseball in 2019, too. In fact, he’s the only player to crack the top 10 in both 2019 and 2024. That’s wild. Aaron Judge, Mookie Betts, Shohei Ohtani, Corey Seager, Juan Soto, Bryce Harper, José Ramírez – they all played in both years. None of them – none! – managed the double that Marte did. This isn’t some weird defensive value issue, either: He’s the only hitter with a top-10 wRC+ in both years.

Those in between years? Don’t look too closely. Marte totaled 9.1 WAR across the 2020-2023 campaigns. He posted 6.3 WAR in each of 2019 and 2024. In that 2020-2023 span, he was 64th among hitters in total WAR. He had two seasons of roughly average offensive production in that span, and produced at a 3 WAR/600 pace instead of the 6.3 WAR/600 pace from 2019 and 2024. So it’s safe to say he’s streaky – one hitter some years, and a different guy other years. Read the rest of this entry »

The other day, I was poking around on the Minnesota Twins’ RosterResource page. Mostly because the Twins have been quiet this offseason, I wanted to make sure they were still there and that I hadn’t missed another round of contraction rumors.

It’s fine, guys, I checked and the Twins are not going out of business anytime soon.

The other thing I noticed is that Minnesota had only two hitters who qualified for the batting title last season, which is not a lot. The Rangers and Brewers (which I would not have guessed) had seven each. And with Carlos Santana bound for his fifth go-around with Cleveland (it’s only his third but I know you were about to look), Willi Castro stands alone in Minnesota. The Marlins and Rays are the only other teams that are set to return only a single qualified hitter from 2024. Read the rest of this entry »

The following article is part of Jay Jaffe’s ongoing look at the candidates on the BBWAA 2025 Hall of Fame ballot. For a detailed introduction to this year’s ballot, and other candidates in the series, use the tool above; an introduction to JAWS can be found here. For a tentative schedule, see here. All WAR figures refer to the Baseball Reference version unless otherwise indicated.

Adam Jones was Mr. Baltimore. Though he was born in San Diego and began his major league career in Seattle, Jones took to Baltimore upon being traded to the Orioles in 2008. On the field, he set an example for younger teammates during lean years, and his combination of power, speed, and graceful defense eventually helped the team end an epic streak of futility. He served as a starter on the Orioles’ first three playoff teams in this millennium, winning four Gold Gloves and making five All-Star teams. Off the field, Jones invested in the city, annually donating a significant chunk of his salary to the local Boys & Girls Club and other charitable endeavors. He emerged as a civic icon, a Black athlete who could relate to the hardships experienced by the city’s Black population, and one who wasn’t afraid to speak out regarding the injustices he saw both locally and nationally.

Jones’ national prominence reached its zenith in 2017 when he made a memorable, iconic catch to rob Manny Machado of a home run while playing center field during the World Baseball Classic — a key moment in helping Team USA win the tournament for the only time thus far. Read the rest of this entry »

Not every out is created equal. Take this fly out from Corbin Carroll, for example:

A lot of things can happen when you make an out with the bases loaded. You could strike out, leaving every runner in place. You could hit into a double play, an inning-ending one in this case. You could ground out some other way, or hit an infield fly. But Carroll’s here was the most valuable imaginable; with one out, he advanced every single runner, including the runner who scored from third.

Mathematically speaking, you can think of it this way. The average out that took place with the bases loaded and one out lowered the team’s run expectancy by a massive 0.61 runs in 2024. That’s because tons of these outs were either strikeouts (bad, runner on third doesn’t score) or double plays (bad, inning ends). But Carroll’s fly out was far better than that. It actually increased the run expectancy by a hair; driving the lead runner home and moving the trail runners up a base is exquisitely valuable.

That’s not the only way this could have gone. Consider a similar situation, a groundout from Aaron Judge:

Like Carroll, Judge batted with a runner on third and fewer than two outs. In this situation, the average out is bad, lowering run expectancy by 0.514 runs. But Judge’s was obviously worse. It cost the Yankees all the expected runs they had left in the inning, naturally, which added up to just a bit more than 1.15. Read the rest of this entry »

Last offseason, the Diamondbacks were in search of a marquee starter to pair with Zac Gallen atop their rotation. The market was thin at the top – Yoshinobu Yamamoto and Shohei Ohtani were probably never available to them, so their best options were Sonny Gray, Blake Snell, Eduardo Rodriguez, Shota Imanaga, and Jordan Montgomery. They signed two of those guys, and neither delivered the rotation-stabilizing performance they had expected. But instead of waving their hands in the air and raving at the injustice of variance, the Diamondbacks got right back on the horse:

BREAKING: Corbin Burnes to Diamondbacks, $210M, 6 years. opt out after 2 years

— Jon Heyman (@jonheyman.bsky.social) 2024-12-28T06:32:12.313Z

Corbin Burnes was the best free agent pitcher available. In each of the last five seasons, he’s been one of the top pitchers in the game, racking up a 2.88 ERA, 3.01 FIP, and 816 innings pitched. He’s second in WAR (21.7) over that time frame, second in RA9-WAR (23.2), second in strikeouts (946), and third in innings pitched. In other words, he’s been a capital-A Ace, a set-it-and-forget-it choice at the top of the starting rotation. He’ll receive $35 million a year for six seasons, with an opt-out after the second year of the deal, which also includes a $10 million signing bonus.

With Gallen also on their dance card, the Diamondbacks have one of the best one-two combinations in the majors. That doesn’t even include Merrill Kelly, a borderline All-Star when healthy, or Brandon Pfaadt, who looked like he was finally breaking out before a rough final two months of the season. Add in Montgomery and Rodriguez, and Arizona goes six deep with plausible playoff starters. That’s how you injury-proof a rotation – sheer depth.
Read the rest of this entry »

Below is an analysis of the prospects in the farm system of the Arizona Diamondbacks. 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 »

For the 21st consecutive season, the ZiPS projection system is unleashing a full set of prognostications. For more information on the ZiPS projections, please consult this year’s introduction and MLB’s glossary entry. The team order is selected by lot, and the first team up is the Arizona Diamondbacks.

Batters

Last year in this space, ZiPS was optimistic about the Diamondbacks bettering their 2023 win total. A big part of that was the computer predicting that the offense would be somewhere around average or (mostly) better everywhere except designated hitter. That’s generally what happened, and they even improved on that projection a bit, signing Joc Pederson at the end of January. The Snakes did, in fact, improve on their won total, going from 84 to 89 wins even though that wasn’t enough to squeeze into the postseason this go-around. Arizona actually led baseball in runs scored, edging out the Dodgers, and the team wasn’t even really aided by Chase Field, which is a much more neutral offensive environment than it used to be. Read the rest of this entry »

Gino Groover is one of the most promising prospects in the Arizona Diamondbacks system. He is also one of the most intriguing. When profiling him for our D-backs list back in May, Eric Longenhagen wrote that the 22-year-old third baseman “was among the 2023 draft’s more volatile and exciting prospects.” Bullish on his potential, our lead prospect analyst added that “2024 might be a breakout season” for the right-handed-hitting North Carolina State University product.

Fate intervened. As Eric explained, Groover ended up having surgery to repair a displaced radius fracture suffered in a collision with a baserunner at first base, this after just four games with High-A Hillsboro. He missed three months, did a rehab stint in the Arizona Complex League, then rejoined the Hops on July 19.

He hit well upon his return. The former second rounder logged a 129 wRC+ over 175 plate appearances with the Northwest League club, and he followed that up with a 178 wRC+ over 55 plate appearances with Double-A Amarillo. Counting his eight games in the ACL, Groover finished the season with a .281/.367/.484 slash line, 10 home runs, and a 133 wRC+. And two other numbers merit mention: His strikeout rate was 13.6%, while his walk rate was 11.4%.

Grover is currently making up for missed development time in the Arizona Fall League, where he is slashing .370/.444/.389 over 63 plate appearances for the Salt River Rafters. He talked hitting prior to a game in mid-October.

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David Laurila: How would you define yourself as a hitter? Also, do you feel that you’ve established an identity at this early stage of your career?

Gino Groover: “I mean, I think everybody is different, but finding yourself as a hitter — what your strengths are, and playing to your strengths — is something you don’t really want to deviate away from. I’ve always had a hit-first profile, letting my power come later as I’ve gotten bigger, stronger, and a little older.

“I have my approach, and, especially at this level, you can’t be afraid to be wrong sometimes. You obviously can’t go up there and expect to hit everything, so you don’t want to deviate from your approach. If you do, you’ll get caught in between and won’t hit either heaters or offspeed. So, whatever my approach is, I stick to it. Sometimes I’m right, sometimes I’m wrong, and we go from there, playing it by ear with whatever I’m seeing.” Read the rest of this entry »