MLB Daily DeltaWeek 25 · September 10, 2026
Engraved portrait of Zac Gallen
week 25
this weekSELL
last weekSELL

Zac Gallen

AZ·P
data as of September 10, 2026·week 25
Sell stable xERA 6.59 +2.49 vs league with no luck excuse; strikeout rate 14% is stable and well below league, limits the ceiling; move on.high 0.90
ROSK 11ERA 5.72WHIP 1.43W 0–1SV 0

Gallen is a sell — the strikeouts are gone and the contact is hard.

His expected ERA is 6.59, more than two and a half runs above the league average of 4.10, and he has faced enough batters for that number to be reliable. The reason is not bad luck — hitters are squaring him up, with a 44.7% hard-hit rate allowed and 11.0% barrels, both well above league. What has vanished is the swing-and-miss: he strikes out 13.9% of batters against a 22% league average, and that rate sits ten points below his own 25% career baseline. Worse, both his expected ERA and his strikeout rate are moving the wrong direction across the sample. His walk rate is fine at 7%, so there is no command problem to fix — the stuff just is not missing bats anymore. The skill is what the numbers say. Sell. 11 K and a 5.72 ERA ROS make him streaming-only — drop him before the window closes.

VS His Norm

  • Strikeout %13.9%−11.1%vs his ~25.0% career norm
  • Walk %7.0%−0.8%vs his ~7.8% career norm

Drivers

  • xeraSIGNALstable xERA 6.59 +2.49 vs league with no luck excuse
  • p_k_pctSIGNALstrikeout rate 14% is stable and well below league — limits the ceiling
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed44.7%
44.7%*
lg avg 40.0% +4.7%vs his norm —
344 / 50 BBE
Barrel % Allowed11.0%
11.0%*
lg avg 8.0% +3.0%vs his norm —
344 / 60 BBE
xwOBA Allowed.384
.384*
lg avg .315 +.069vs his norm —
440 / 200 TBF
xERA6.59
6.59*
lg avg 4.10 +2.49vs his norm —
440 / 200 TBF
ERA6.34
6.34*
lg avg 4.10 +2.24vs his norm —ERA is above the ~4.10 league averageexpect it to fall.
98 / 200 IP
Strikeout %13.9%
norm13.9%*
lg avg 22.0% −8.1%vs his norm −11.1%
440 / 70 TBF
Walk %7.0%
norm7.0%*
lg avg 8.0% −1.0%vs his norm −0.8%
440 / 170 TBF
BABIP Against.320
.320*
lg avg .295 +.025vs his norm —BABIP Against is above the ~.295 league averageexpect it to fall.
344 / 800 BIP
Swinging-Strike %8.7%
8.7%*
lg avg 11.0% −2.3%vs his norm —
440 / 60 TBF
Chase %31.2%
31.2%*
lg avg 28.5% +2.7%vs his norm —
440 / 60 TBF
Fastball Velo93.4 mph
93.4 mph*
lg avg 94.0 mph −0.6 mphvs his norm —
1644 / 50 PITCHES

5×5 ROS Outlook

rest of season

Where each category goes the rest of the way, and the skill that drives it. Tap a row to expand the full derivation.

statytdrosdriverconf
K% 13.9%→17.4%signal11 K — K% 13.9% (signal) lifted to career ~25.0% → projected 17.4% over ~12 remaining IP.
xERA 6.59signal5.72 ERA — xERA 6.59 (signal) blended 65% skill / 35% league 4.10 at 59 IP.
BB% 7.0% + contactsignal1.43 WHIP — a 7% walk rate plus BABIP-against 0.306 gives a 1.50 skill WHIP, blended 65…
run support + role0-1 W — wins ride run support and how deep he goes, not just skill.
role (starter)0 SV — role: starter, not in the save mix.
rosterdrop11 K ROS, 5.72 ERA

Every projection traces to a sabermetric input. The driver and confidence shown per row are always visible; tap any row to expand the full derivation.

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