On August 11, Paul Skenes walked off the mound in Miami after just 65 pitches. He hadn’t been roughed up — he’d only allowed two runs. What raised eyebrows was something else entirely: his fastball averaged 95.7 mph, the lowest mark of his career and three full ticks below what he was throwing when he won the Cy Young in 2025. With Pittsburgh sitting at 57-59 and 4.5 games back of the final NL Wild Card spot, their ace isn’t quite the same pitcher right now.
The numbers that worry — and the ones that don’t
Skenes’ 2026 line: 9-11, 3.88 ERA, 1.12 WHIP in 134.1 innings. For context, he posted a 1.96 ERA in 2024 and a 1.97 in 2025 — almost identical back-to-back. This year’s number is roughly double that.
But there’s an important caveat. His FIP — which measures only outcomes he directly controls, stripping out defense and luck — sits at 3.00, with an xFIP of 3.18. That gap between ERA and FIP tells you a chunk of the damage comes from bad-luck sequences, not a genuine collapse in stuff. He’s not broken.
What is real and undeniable: over his last 16 starts, the Pirates are 3-13 with Skenes averaging 5.3 innings per outing and a 5.00 ERA in that stretch. In the three starts before the Miami game, he allowed 16 runs in 19⅓ innings with 14 combined walks. Control had never been his weakness — until now.
Three degrees changed everything
Here’s the detail analysts keep circling back to: Skenes raised his arm angle by three degrees in 2026, from 23° to 26°. Sounds minor. It isn’t.
In 2025, hitters missed his slider by an average of 5.1 inches. This year that number has dropped to 3.1 inches. The pitch still moves — it’s just no longer a weapon that ends at-bats. And when the slider stops missing bats, the fastball has to do more of the heavy lifting, right at the moment the fastball has also lost velocity.
The strike-zone data backs it up:
- Zone rate dropped from 51% in each of his first two seasons to 46% in 2026
- Walk rate climbed to 6.3% — a career worst
- Command+ fell from 112 last year to 108 this year — the difference between a pitcher who attacks and one who negotiates with the strike zone
What Skenes and his manager are — and aren’t — saying
Neither Skenes nor manager Don Kelly has mentioned injury. Kelly framed the early exit against Miami as a strategic call, not a reaction to a bad outing. Skenes was more direct: the high-pitch-count innings are wearing on him. He’s noted that he’s had more 30-to-35-pitch innings in 2026 than in his previous two seasons combined.
There’s also a context point that doesn’t get enough attention: Skenes threw 8.1 innings for Team USA in the World Baseball Classic in March, pushing his workload earlier than a normal long-season buildup would allow.
A theory about weight gain circulated through reporter John Perrotto’s work on social media, but it has no official or medical confirmation. It stays where unverified rumors belong.
Pittsburgh heads into the rest of August with a closing postseason window. Skenes remains the best arm in their rotation and one of the better pitchers in the league when you trust the underlying numbers — a 3.00 FIP doesn’t lie. The problem is that a pennant race doesn’t wait for the surface stats to catch up. Three degrees of arm angle can be the difference between Cy Young and an uncomfortable August question.
