MLB Daily DeltaWeek 25 · September 10, 2026
Engraved portrait of Yuki Matsui
week 25
this weekSELL-HIGH
last weekNO CALL

Yuki Matsui

SD·P
data as of September 10, 2026·week 25
new call as of September 10, 2026
Sell High luck-free xERA 3.13 is 1.04 above the ERA, regression coming — BABIP-against 0.206 suppressed and unstable, flattering the ERA; sell into the hype before regression.high 0.95 (narrative held for review)
ROSK 6ERA 3.13WHIP 1.38W 0–0SV 0

Matsui is a sell-high — the ERA is BABIP luck, not skill.

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

VS His Norm

  • Walk %14.0%+2.4%vs his ~11.6% career norm
  • Strikeout %27.1%+2.1%vs his ~25.0% career norm

Drivers

  • babip_againstNOISEBABIP-against 0.206 suppressed and unstable — flattering the ERA
  • xeraSIGNALluck-free xERA 3.13 is 1.04 above the ERA — regression coming
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed30.1%
believable since Jun 1730.1%*
lg avg 40.0% −9.9%vs his norm —
133 / 50 BBE
Barrel % Allowed8.3%
8.3%*
lg avg 8.0% +0.3%vs his norm —
133 / 60 BBE
xwOBA Allowed.275
.275*
lg avg .315 −.040vs his norm —
229 / 200 TBF
xERA3.13
3.13*
lg avg 4.10 −0.97vs his norm —
229 / 200 TBF
ERA2.09
2.09*
lg avg 4.10 −2.01vs his norm —ERA is below the ~4.10 league averageexpect it to rise.
56 / 200 IP
Strikeout %27.1%
norm27.1%*
lg avg 22.0% +5.1%vs his norm +2.1%
229 / 70 TBF
Walk %14.0%
norm14.0%*
lg avg 8.0% +6.0%vs his norm +2.4%
229 / 170 TBF
BABIP Against.206
.206*
lg avg .295 −.089vs his norm —BABIP Against is below the ~.295 league averageexpect it to rise.
133 / 800 BIP
Swinging-Strike %16.6%
16.6%*
lg avg 11.0% +5.6%vs his norm —
229 / 60 TBF
Chase %31.3%
31.3%*
lg avg 28.5% +2.8%vs his norm —
229 / 60 TBF
Fastball Velo91.9 mph
91.9 mph*
lg avg 94.0 mph −2.1 mphvs his norm —
942 / 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% 27.1%→26.1%signal6 K — K% 27.1% (signal) tempered to career ~25.0% → projected 26.1% over ~6 remaining IP.
xERA 3.13signal3.13 ERA — regresses up toward xERA 3.13 (signal): elite skill, but overperforming even…
BB% 14.0% + contactsignal1.38 WHIP — a 14% walk rate plus BABIP-against 0.280 gives a 1.45 skill WHIP, blended 6…
run support + role0-0 W — wins ride run support and how deep he goes, not just skill.
role (middle)0 SV — role: middle, not in the save mix.
rosterdeep3.13 ERA, 1.38 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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