D-backs No. 9 prospect Patrick Forbes, sidelined early by a flexor strain, looks sharp again at High-A

Arizona’s High-A starting pitcher development has a new talking point again: Patrick Forbes, the Diamondbacks’ No. 9 prospect, returned to mound work after beginning the season on the injured list with a right flexor strain and showed improved performance at High-A.

A little under three months ago, Forbes was given the kind of early pro-stage opportunity that can accelerate a prospect’s momentum. He toed the rubber as the starter for the D-backs’ Spring Breakout game, an appearance MLB treated as his unofficial pro debut, and the outing quickly turned chaotic. He allowed four hits and four walks, gave up two runs in 1 2/3 innings, and was removed from normal progression shortly thereafter.

That rough start is part of the reason his return matters. Flexor injuries can interrupt rhythm even when the underlying velocity and movement are still present, and the early-season timetable for throwing programs often dictates how quickly a pitcher can reclaim command and endurance. Forbes’ placement on the injured list early in the season with the right flexor strain meant Arizona had to prioritize recovery and careful ramp-up rather than letting performance alone set the pace.

When Forbes came back, the framing from MLB’s D-backs beat was straightforward: he is “healthy again,” and at High-A he displayed the kind of pitch-shaping reputation scouts chase. The report emphasizes that his stuff played with impact, with the core theme being that his repertoire looked sharper and more difficult to square up than it had during the earlier pro-stage appearance.

The story also highlights what organizations are looking for once a prospect returns from a lower-arm issue. It is not only whether a pitcher can miss bats or keep runs off the board, but whether he can stay efficient through an outing, attack hitters with conviction, and show that command is returning in the strike zone. In that context, Forbes’ High-A showing functions as a meaningful checkpoint for Arizona’s broader development timeline.

Forbes’ development is worth watching because the Diamondbacks’ pitching pipeline is built on the ability to blend upside with repeatability. A No. 9 prospect ranking is not the same as a finished product, and a flexor strain makes the early innings of a season especially tricky for young pitchers. If Forbes continues to look more like the prospect his raw profile suggests, he can move through levels with less friction.

Next, Arizona’s internal process will likely center on consistency: how he handles follow-up starts, whether he can keep the same aggressiveness as hitters adjust, and whether his mechanics and feel hold steady as workload increases. His return from the injured list gives him a chance to turn an earlier, difficult pro debut into a clean development arc.

For now, the takeaway is that Forbes’ road back has started to look like it is going in the right direction. His High-A performance is the first step, and the bigger question is whether it becomes a pattern rather than a one-week bright spot.