Introduction
With the regular season now over for both Major League and Minor League Baseball, I think now would a be good time take a look at the best individual performance at each position in the Diamondbacks farm system. For the sake of the reader and my own sanity, we’re going to look at just the starting battery and infield corner positions today, otherwise this would be a very long read.
Before I do that, I want to congratulate the D’Backs Double-A affiliate, the Amarillo Sod Poodles, on winning the Texas League Championship. Winning a championship is great for the development of the younger players on the team, especially those who might not have had the best individual season this year. That said, about half the players mentioned in the next few articles will be players on that team.
Starting Pitcher
David Hagaman is the clear and obvious answer for the best starting pitcher in the Diamondbacks farm system in 2026, and the pitcher most likely to actually be named the Dbacks MILB pitcher of the year. There really isn’t much competition, especially knowing the context behind the numbers.
Hagaman, who was acquired in last summer’s Merrill Kelly trade, started the year assigned to high-A Hillsboro in the pitcher friendly confines of the Northwestern League. Across 15 games, Hagaman put up 71⅓ innings with a 3.03 ERA, 4.10 FIP, and 4.15 xFIP. Adjusted for the League that works out to a very impressive 61 ERA- and a slightly less impressive 84 FIP-. His 10.85 strikeouts per nine innings and 28% strikeout percentage are very impressive as well. That alone might not be enough to make him pitcher of the year, but what he did after being promoted to Double-A Amarillo, in the much more hitter friendly Texas League that cemented him as the organization’s pitcher of the year.
Hagaman started seven games, putting up 35 ⅓ innings with a 2.55 ERA, a 3.22 FIP, and a 3.79 xFIP. His strikeout percentage went up to 32.4% and 11.72 strikeouts per nine innings. He also walked less batters, going from 10.7% to 8.5%. In the hitter friendly Texas league, that translates to a 43 ERA- and a 75 ERA-. Hagaman did struggle with walks though in his post season outing in the Texas League division series and the championship to a lesser extent. It’ll be interesting to see if he returns to Double-A next season, gets promoted to Triple-A Reno, or possibly even has a chance at making his MLB debut with a strong showing in spring training. My first article going in depth on Dbacks pitching prospects has a scouting report if you’re interested in reading more about him, which you can read here.
Catcher
Gabriel Moreno has won the NL batting title, which I’m pointing out now because it really helps show just how strong the Diamondbacks organization is right now at the catching position from top to bottom, and how many of them had very good seasons this year, which is how this turned into another multi part series.
The Dbacks reinforced that position of strength after using their first round pick on a well regarded college catcher, Ryder Helfrick, who went on to have a solid professional debut in the Low A level California League. Despite putting up a solid triple slash line of .245/.327/.521 with a 104 wRC+ in just 24 games, that’s just 24 games, so he’s not the All Star here.
Jhosep Villarroel put up eye popping numbers in his 47 games this summer, but he’s also a 17 year old in the Dominican Summmer League, so you have to take these number with a massive grain of salt, which is why he’s not my All-Star but another honorable mention. That said his numbers are REALLY good, it’s just a small sample size and he’s very young. Combined between the two Dbacks DSL teams he hit .303/.500/.485 with a .493 wOBA and a 148 OPS+. Villarroel will almost certainly make his stateside debut with either the ACL Dbacks or Visalia Rawhide next season, which will give us a much better chance to evaluate him as a prospect.
It’s also not Alberto Barriga, who tore up the pitcher friendly Northwestern League for 40 games, hitting 259/.345/.490 with a 113 wRC+. The reason he’s not is that he struggled in the extremely hitter friendly Texas League after being being promoted, hittng just 237/301/362 with .302 wOBA and 55 wRC+ in 57 Games. He’s one of the players mentioned in the intro who I think will benefit a lot from the experience gained in Amarillo’s championship run. Barriga’s probably the most unique of the catching prospects here, so I am really looking forward to seeing how he adjust next season.
Ivan Luciano has a very solid argument based on his above average play in 2026. Luciano spent the majority (85 games) of the season in Visalia, where he hit 264/.375/.441 with .372 wOBA and a 109 wRC+. In the 12 games in Hillsboro after being promoted, he hit .279/.380/.465 with a .383 wOBA and 122 WRC+. Combined across the two levels, Luciano put up a solidly above average tripleslash of .266/.376/.444 with a .374 wOBA and 111 wRC+. One of his teammates (at the beginning of the season) has a much stronger argument based on his numbers, and that’s Carlos Virahonda.
Carlos Virahonda started the year with 48 games in Visalia in which he hit .273/.359 /.508 .383 wOBA and 115 wRC+. He was then promoted to High A Hillsboro and in 50 games, and a in much more pitcher friendly league, where he’d hit .272/.393/.468 with a .391 wOBA and a 127 wRC+. He’d then finish his season playing in four games with Double A Amarillo, where he’d go 4 for 15 with a pair of doubles and a homerun, while getting plunked three times to give him a .267/.389/.600 and a 134 wC+. In 108 games combined across all three levels, Virahonda hit .272/.377/.493 with 18 HRS, a .388 wOBA and a 122 wRC+. To cap it all off, he also had a fantastic post season with Amarillo, playing a key role offensively.
If you’d like to read a more in depth look at the catchers, check out this article from earlier this season.
Third Base
Danny Serretti could have easily been an all-star at second base, but he had slightly more innings as a third baseman. There also really aren’t any other obvious candidates at the position, unlike second base which is just as stacked as catcher, so we’re sticking Serretti here. I had an article focused on Serretti’s background prior to this season, which you can read here if you are so interested.
Serreti spent a lot of time going back and forth between Amarillo and Reno, even coming back to play a key role in Amarillo’s championship. In 74 games in Amarillo he hit 272/.418/.510 with a .413 wOBA and a 124 WRC+. In 35 games in Reno, he hit .316/.421/.513 with a .419 wOBA a .357 xWOBA, and a 129 wRC+. His walk percentage fell slightly from 17.8% to 14.9%, but I’d attribute that to the higher batting average, which is backed up by his strikeout percentage staying within .3% of each other, with Serretti striking out 22.4% in Amarillo and 22.7% in Reno. As a whole, Serretti finished his season hitting 287/419/.511 with 19 homeruns, 11 stolen bases, a .415 wOBA and a 126 wRC+ in 109 games.
The only other third baseman in the same ballpark (at times literally) was LuJames Groover, who was above average in Reno but struggled at the MLB level in 2026.
First Base
Finally, at least for this week, we have another position with a single clear and obvious choice.
Manuel Pena broke out in a big way in 2026, hitting 26 homeruns in 61 games with Amarillo, while also putting up a triple slash line of .311/354/.673 with a robust .428 wOBA and 134 wRC+ in the first half of the season . After being promoted to Reno he’d cool down significantly, but overall in 112 games he would hit .305/.345/.555 with a 108 wRC+ with 31 HRs. The only other first baseman who had better numbers in the Dbacks farm system were Pavin Smith and Tyler Locklear and I don’t think anyone reading this wants to hear more about either player.
That’s it for now! Next time, I’ll look at the middle infield and outfielders.
Read the full article here