MLB Daily DeltaWeek 25 · September 10, 2026
week 25
this weekSELL
last weekSELL

Randy Dobnak

KC·P
data as of September 10, 2026·week 25
Sell stable xERA 4.78 +0.68 vs league with no luck excuse; strikeout rate 16% is stable and well below league, limits the ceiling; move on.high 0.75
ROSK 4ERA 4.40WHIP 1.39W 0–0SV 0

Dobnak is a sell — the expected ERA is above league and climbing.

His expected ERA is 4.78, .68 above the league average of 4.10, and his sample is past the point where that number becomes reliable. Nothing in the luck column softens it: his BABIP-against is not carrying an inflated ERA, and his expected wOBA allowed of .335 is 20 points above league. The strikeout rate is the real problem. He strikes out 16% of batters against a league average of 22%, and that rate has been stepping down across the sample. He has six more points than his 13.8% career baseline, but below-average swing-and-miss on a 92.2 mph fastball doesn't portend a jump. He doesn't miss bats, doesn't suppress contact, and his expected ERA has been moving the wrong direction. Sell. A 4 K / 4.40 ERA / 1.39 WHIP line is a drag — drop him to the waiver wire or leave him streaming-only.

VS His Norm

  • Walk %8.6%+2.5%vs his ~6.0% career norm
  • Strikeout %16.0%+2.1%vs his ~13.8% career norm

Drivers

  • xeraSIGNALstable xERA 4.78 +0.68 vs league with no luck excuse
  • p_k_pctSIGNALstrikeout rate 16% is stable and well below league — limits the ceiling
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed40.3%
40.3%*
lg avg 40.0% +0.3%vs his norm —
201 / 50 BBE
Barrel % Allowed5.0%
5.0%*
lg avg 8.0% −3.0%vs his norm —
201 / 60 BBE
xwOBA Allowed.335
.335*
lg avg .315 +.020vs his norm —
268 / 200 TBF
xERA4.78
4.78*
lg avg 4.10 +0.68vs his norm —
268 / 200 TBF
ERA2.54
2.54*
lg avg 4.10 −1.56vs his norm —ERA is below the ~4.10 league averageexpect it to rise.
63.7 / 200 IP
Strikeout %16.0%
norm16.0%*
lg avg 22.0% −6.0%vs his norm +2.1%
268 / 70 TBF
Walk %8.6%
norm8.6%*
lg avg 8.0% +0.6%vs his norm +2.5%
268 / 170 TBF
BABIP Against.284
.284*
lg avg .295 −.011vs his norm —BABIP Against is below the ~.295 league averageexpect it to rise.
201 / 800 BIP
Swinging-Strike %9.2%
9.2%*
lg avg 11.0% −1.8%vs his norm —
268 / 60 TBF
Chase %30.3%
30.3%*
lg avg 28.5% +1.8%vs his norm —
268 / 60 TBF
Fastball Velo92.2 mph
92.2 mph*
lg avg 94.0 mph −1.8 mphvs his norm —
1067 / 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% 16.0%→15.1%signal4 K — K% 16.0% (signal) tempered to career ~13.8% → projected 15.1% over ~9 remaining IP.
xERA 4.78signal4.40 ERA — xERA 4.78 (signal) blended 65% skill / 35% league 3.70 at 4 IP.
BB% 8.6% + contactsignal1.39 WHIP — a 9% walk rate plus BABIP-against 0.292 gives a 1.46 skill WHIP, blended 65…
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.
rosterdrop4.40 ERA, 1.39 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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