MLB Daily DeltaWeek 25 · September 10, 2026
Engraved portrait of Orion Kerkering
week 25
this weekBUY
last weekHOLD

Orion Kerkering

PHI·P
data as of September 10, 2026·week 25
flipped from HOLD on September 10, 2026
Buy stable xERA 3.44, 0.66 below league, production is earned; velocity stable and above league; add now.high 0.80
ROSK 5ERA 3.44WHIP 1.38W 0–1SV 0–0

Kerkering is a buy — the stuff is real and getting better.

His fastball is sitting at 97.3 mph, three miles an hour above league average, and it has been climbing across the season. That is the foundation. His expected ERA is 3.44, well below the league average of 4.10, and the trajectory on that number is stepping down, meaning he is getting harder to hit as the sample grows. The contact quality backs it up: a 31.1% hard-hit rate allowed against a 40% league average, and a .288 expected wOBA allowed on 243 batters faced — past the point where that number becomes reliable. He does walk 11.9% of batters, which is high and will cost him in some outings. But that is a command issue, not a skill problem. The velocity and the expected ERA say the run prevention is earned. Buy. Deep-league asset only: 5 K, 3.44 ERA, 1.38 WHIP with 0-0 SV — no save path, so stream him when a spot opens.

VS His Norm

  • Strikeout %23.5%—−3.3% ▼vs his ~26.8% career norm
  • Walk %11.9%—+3.3% ▲vs his ~8.6% career norm

Drivers

  • xeraSIGNALstable xERA 3.44, 0.66 below league — production is earned
  • p_fastball_veloSIGNALvelocity stable and above league
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed31.1%
31.1%*
lg avg 40.0% ▼−8.9%vs his norm —
151 / 50 BBE
Barrel % Allowed6.0%
believable since Jun 36.0%*
lg avg 8.0% ▼−2.0%vs his norm —
151 / 60 BBE
xwOBA Allowed.288
.288*
lg avg .315 ▼−.027vs his norm —
243 / 200 TBF
xERA3.44
3.44*
lg avg 4.10 ▼−0.66vs his norm —
243 / 200 TBF
ERA4.12
4.12*
lg avg 4.10 ▲+0.02vs his norm —ERA is above the ~4.10 league average — expect it to fall.
54.7 / 200 IP
Strikeout %23.5%
norm23.5%*
lg avg 22.0% ▲+1.5%vs his norm −3.3% ▼
243 / 70 TBF
Walk %11.9%
norm11.9%*
lg avg 8.0% ▲+3.9%vs his norm +3.3% ▲
243 / 170 TBF
BABIP Against.260
.260*
lg avg .295 ▼−.035vs his norm —BABIP Against is below the ~.295 league average — expect it to rise.
151 / 800 BIP
Swinging-Strike %11.0%
11.0%*
lg avg 11.0% ▲+0.0%vs his norm —
243 / 60 TBF
Chase %28.4%
28.4%*
lg avg 28.5% ▼−0.1%vs his norm —
243 / 60 TBF
Fastball Velo97.3 mph
97.3 mph*
lg avg 94.0 mph ▲+3.3 mphvs his norm —
1000 / 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% 23.5%→25.0%signal5 K — K% 23.5% (signal) lifted to career ~26.8% → projected 25.0% over ~5 remaining IP.
xERA 3.44signal3.44 ERA — regresses up toward xERA 3.44 (signal): elite skill, but overperforming even…
BB% 11.9% + contactsignal1.38 WHIP — a 12% walk rate plus BABIP-against 0.288 gives a 1.46 skill WHIP, blended 6…
run support + role0-1 W — wins ride run support and how deep he goes, not just skill.
role (setup)0-0 SV — role: setup, in the save mix only situationally.
rosterdeep3.44 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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