Phillies’ 2026 rotation question: is the bigger concern Aaron Nola or Andrew Painter?

The Phillies are getting an early version of the same crisis from two different arms. Aaron Nola, a 12th-year veteran meant to be an innings-and-competitiveness anchor, has instead been struggling to get through starts in a way Philadelphia needs. Andrew Painter, still a work-in-progress in his young major league career after Tommy John surgery and a difficult minor-league stretch, has been far more hittable than the organization envisioned. Even within the rotation, the question has sharpened into a choice of which problem is more urgent to solve: the veteran fading or the prospect not yet translating into reliable dominance.

In June, Painter’s season has been defined by his fastball’s vulnerability. The Phillies’ right-hander came up as a power arm, but according to, hitters have been getting to his four-seam in a way that has turned a core weapon into a weekly challenge. In Painter’s 6-3 loss to the White Sox on Saturday, he faced immediate trouble in the first inning, throwing 42 pitches in a four-run frame while missing the zone with his fastball. The report also described a practical adjustment during the day, with Painter throwing the four-seamer much less in later outings because it had been ineffective.

further reported that opposing batters are hitting.390 against Painter’s four-seam, with four home runs attributed to that pitch. In that same Saturday start, the four-seam tally included 10 balls and no strikeouts recorded in the opening stretch that set the tone. Painter’s overall approach is still rooted in command, he said in the game account, but the issue is translating that plan into enough swings-and-misses to keep games close. If Philadelphia’s rotation hopes to keep Painter as more than a swingman-level option, his ability to locate and miss bats with his heater has to improve.

Nola’s problems are different, but the impact is similarly direct. While Painter is learning what major league hitters do to his mechanics and pitch effectiveness, Nola is trying to find a functional version of himself in real time. Yahoo Sports described the veteran as a struggling back-of-the-rotation candidate who has not been delivering the innings Philadelphia needs. Through 13 starts, the report placed Nola’s ERA at 5.86, and it emphasized that his start length has been inconsistent, with multiple outings failing to reach the six-inning mark.

Yahoo also framed the expectation gap for Nola. After an injury- and performance-challenged 2025, most of the offseason hope was that he could return to being the kind of reliable starter who stabilizes a rotation rather than dragging it into catch-up mode. Instead, according to the same report, he has lasted less than five innings in five of his 13 starts and has finished at least six innings in only four. For a team that needs its starters to defend leads or at least keep the bullpen fresh, that pattern becomes a structural issue rather than a one-off.

So which is the bigger concern for 2026, the veteran or the rookie? The answer depends on how you weigh timeline versus leverage. Painter’s development problem is tied to a single, fixable pitch outcome, and his role could evolve if his fastball command and effectiveness rebound. Nola’s issue, by contrast, affects the rotation’s daily baseline. Even if Painter improves, Philadelphia still needs Nola to pitch like the stabilizing presence he was meant to be at this stage of his career.

What to watch next is straightforward but not simple. For Painter, the key is whether his four-seam numbers trend toward average or whether he continues to avoid the pitch into elevated counts. For Nola, the immediate bar is innings and sequencing, including whether he can consistently reach deeper into games without turning early contact into prolonged damage.

Either way, Philadelphia’s 2026 title picture is likely to be shaped by a question that looks technical, but lands in the standings. A rotation that cannot keep opponents from scoring, or cannot keep its starters on the mound, forces the rest of the roster to compensate. The Phillies can survive turbulence, but repeated problems from both ends of the pitcher-development spectrum will eventually force more than minor tweaks.

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