D-backs Backfields Prospect Weekly: Virahonda Homers Twice in His AA Debut Week, Curley Dominates at Amarillo

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D-backs Backfields Prospect Weekly covers the last 7 days of action for the Diamondbacks farm system.

Virahonda Arrives at Double-A and Immediately Hits Two Home Runs

Carlos Virahonda (AA, C, Rank: 28) wasted no time making an impression at Amarillo, going 5-for-14 with two home runs, two doubles, three RBI, four walks, and three hit-by-pitches across 18 plate appearances in his first Double-A week. That is a remarkable debut at a new level for a 20-year-old catcher who was pitching in High-A as recently as last month. The power was never really in question: he has posted a combined .493 slugging percentage and 19 home runs across 448 plate appearances at three levels this season, including a .508 slugging mark at Single-A Visalia. What makes this week stand out is the patience. Four walks and three HBPs in 18 plate appearances, combined with just two strikeouts, is the cleanest contact-and-on-base week of his season. His full-season contact rate sits at 79.1 percent with a 44 percent swing rate and a BB% of 8.3, all consistent across levels, and this week he held all of that together against Double-A arms while also going deep twice.

The scouting profile on Virahonda centers on defense-first utility at catcher, with 50 grades across hit, power, arm, and field. His receiving and game-calling are still works in progress, and below-average speed means his entire value concentrates at catcher. An up-down projection is the realistic ceiling based on current tools, and nothing about his underlying profile has shifted. But a 20-year-old catcher with 19 home runs at three levels, arriving at Double-A and posting a two-homer debut week with a walkfest on top of it, is not a profile that loses any credibility. The big question going into 2027 is whether his contact quality and plate approach hold up over a full Double-A sample, because everything he has done in 2026 has tracked above what a fringe-50-hit-tool projection suggests. I would take the over on some of those offensive grades after a season like this.

Curley Goes the Distance at Amarillo With 13 Strikeouts

Brian Curley (AA, RHP, Rank: 21) delivered the standout pitching line of the week, completing nine innings at Amarillo with 13 strikeouts, one earned run, four walks, and nine hits allowed across 139 pitches. The 21 swinging misses generated on those 139 pitches tell part of the story: a 65-grade fastball sitting 95-98 mph paired with a 60-grade slider is going to rack up whiffs regardless of sequencing, and Double-A hitters had no reliable answer for the combination over nine innings. The full-season Double-A ERA now sits at 6.41, and his combined ERA across High-A and Double-A is 5.28, so the surface numbers have been rougher than this start suggests. But the last 30 days at Amarillo present a different picture: a 2.19 ERA over 24.2 innings, a 28.2 percent strikeout rate, and a 27.7 percent whiff rate across five appearances. This week's start was the peak of that stretch.

The fuller context is that Curley transitioned from High-A to Double-A mid-season and took a significant beating in his first Double-A exposure, posting a 1.73 WHIP and giving up 13 home runs in 46.1 innings before his September form arrived. The 45 command grade remains the central issue: four walks in nine innings is actually functional for him, and when the fastball stays off the middle third of the plate, the slider closes things out. His changeup grades at 45 and has not yet developed into a reliable third option, which matters more in longer starts when hitters get multiple looks. Still, a 23-year-old right-hander spinning a complete-game nine-inning effort with his fastball-slider combo working in tandem is the version of Curley his projection was built on. A fifth-starter or up-down outcome is still the likely landing spot, but September has provided legitimate evidence that the stuff is real enough to get there.

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