MLB Daily DeltaWeek 25 · September 10, 2026
Engraved portrait of Cal Quantrill
week 25
this weekSELL-HIGH
last weekSELL-HIGH

Cal Quantrill

data as of September 10, 2026·week 25
Sell High luck-free xERA 3.89 is 1.00 above the ERA, regression coming — BABIP-against 0.242 suppressed and unstable, flattering the ERA; sell into the hype before regression.high 0.95 (narrative held for review)
ROSK 4ERA 3.82WHIP 1.23W 0–1SV 0

Quantrill is a sell-high — his ERA is BABIP luck, not skill.

Surface ERA flattered by an unsustainably low BABIP-against; xERA says regression. Sell high.

VS His Norm

  • Walk %6.0%−1.6%vs his ~7.6% career norm
  • Strikeout %18.5%+1.1%vs his ~17.4% career norm

Drivers

  • babip_againstNOISEBABIP-against 0.242 suppressed and unstable — flattering the ERA
  • xeraSIGNALluck-free xERA 3.89 is 1.00 above the ERA — regression coming
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed36.2%
36.2%*
lg avg 40.0% −3.8%vs his norm —
309 / 50 BBE
Barrel % Allowed7.8%
believable since May 287.8%*
lg avg 8.0% −0.2%vs his norm —
309 / 60 BBE
xwOBA Allowed.305
.305*
lg avg .315 −.010vs his norm —
417 / 200 TBF
xERA3.89
3.89*
lg avg 4.10 −0.21vs his norm —
417 / 200 TBF
ERA2.89
2.89*
lg avg 4.10 −1.21vs his norm —ERA is below the ~4.10 league averageexpect it to rise.
102.7 / 200 IP
Strikeout %18.5%
norm18.5%*
lg avg 22.0% −3.5%vs his norm +1.1%
417 / 70 TBF
Walk %6.0%
norm6.0%*
lg avg 8.0% −2.0%vs his norm −1.6%
417 / 170 TBF
BABIP Against.242
.242*
lg avg .295 −.053vs his norm —BABIP Against is below the ~.295 league averageexpect it to rise.
309 / 800 BIP
Swinging-Strike %9.5%
9.5%*
lg avg 11.0% −1.5%vs his norm —
417 / 60 TBF
Chase %30.1%
30.1%*
lg avg 28.5% +1.6%vs his norm —
417 / 60 TBF
Fastball Velo93.8 mph
93.8 mph*
lg avg 94.0 mph −0.2 mphvs his norm —
1587 / 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% 18.5%→18.1%signal4 K — K% 18.5% (signal) tempered to career ~17.4% → projected 18.1% over ~7 remaining IP.
xERA 3.89signal3.82 ERA — xERA 3.89 (signal) blended 65% skill / 35% league 3.70 at 21 IP.
BB% 6.0% + contactsignal1.23 WHIP — a 6% walk rate plus BABIP-against 0.275 gives a 1.23 skill WHIP.
run support + role0-1 W — wins ride run support and how deep he goes, not just skill.
role (middle)0 SV — role: middle, not in the save mix.
rosterdeep3.82 ERA, 1.23 WHIP

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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