MLB Daily DeltaWeek 27 · September 30, 2026
Engraved portrait of Ethan Roberts
week 27
this weekSELL-HIGH
last weekNO CALL

Ethan Roberts

CHC·P
data as of September 30, 2026·week 27
new call as of September 30, 2026
Sell High strikeout rate 16% is stable and well below league, limits the ceiling — BABIP-against 0.260 suppressed and unstable, flattering the ERA; luck-free xERA 5.05 is 0.84 above the ERA, regression coming; sell into the hype before regression.high 0.89
ROSK 0ERA 3.70WHIP 1.24W 0–0SV 0

Roberts is a sell-high — the ERA is hiding a weak strikeout profile.

His BABIP-against is .260, 35 points below the league average of .295, and that is the number keeping his ERA where it is. BABIP-against needs around 800 balls in play to be reliable, and he has 76, so that gap is luck, not skill. Strip it out and his expected ERA is 5.05 — nearly a full run above what the box score shows. The strikeout rate is the bigger problem: 15.5% against a league average of 22%, and it has stepped down from his 20.2% career baseline. He is not missing bats, so he cannot pitch around the correction when the bounces stop going his way. Sell high. Sell into 0 K / 3.70 ERA / 1.24 WHIP before the luck corrects — a deep-league trade chip, not a hold.

VS His Norm

  • Strikeout %15.5%—−4.7% ▼vs his ~20.2% career norm

Drivers

  • babip_againstNOISEBABIP-against 0.260 suppressed and unstable — flattering the ERA
  • xeraNOISEluck-free xERA 5.05 is 0.84 above the ERA — regression coming
  • p_k_pctSIGNALstrikeout rate 16% is stable and well below league — limits the ceiling
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed44.7%
believable since Jun 1044.7%*
lg avg 40.0% ▲+4.7%vs his norm —
76 / 50 BBE
Barrel % Allowed3.9%
3.9%*
lg avg 8.0% ▼−4.1%vs his norm —
76 / 60 BBE
xwOBA Allowed.342
.342*
lg avg .315 ▲+.027vs his norm —xwOBA Allowed is above the ~.315 league average — expect it to fall.
110 / 200 TBF
xERA5.05
5.05*
lg avg 4.10 ▲+0.95vs his norm —xERA is above the ~4.10 league average — expect it to fall.
110 / 200 TBF
ERA4.21
4.21*
lg avg 4.10 ▲+0.11vs his norm —ERA is above the ~4.10 league average — expect it to fall.
25.7 / 200 IP
Strikeout %15.5%
norm15.5%*
lg avg 22.0% ▼−6.5%vs his norm −4.7% ▼
110 / 70 TBF
Walk %12.7%
norm12.7%*
lg avg 8.0% ▲+4.7%vs his norm +3.1% ▲Walk % is above his ~9.6% norm — expect it to fall.
110 / 170 TBF
BABIP Against.260
.260*
lg avg .295 ▼−.035vs his norm —BABIP Against is below the ~.295 league average — expect it to rise.
76 / 800 BIP
Swinging-Strike %9.8%
9.8%*
lg avg 11.0% ▼−1.1%vs his norm —
110 / 60 TBF
Chase %25.1%
25.1%*
lg avg 28.5% ▼−3.4%vs his norm —
110 / 60 TBF
Fastball Velo93.6 mph
93.6 mph*
lg avg 94.0 mph ▼−0.4 mphvs his norm —
436 / 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% 15.5%→18.5%signal0 K — K% 15.5% (signal) lifted to career ~20.2% → projected 18.5% over ~0 remaining IP.
xERA 5.05noise3.70 ERA — xERA 5.05 (noise) blended 0% skill / 100% league 3.70 at 16 IP.
BB% 12.7% + contactnoise1.24 WHIP — a 13% walk rate plus BABIP-against 0.292 gives a 1.67 skill WHIP, blended 0…
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.
rosterdeep3.70 ERA, 1.24 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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