MLB Daily DeltaWeek 25 · September 10, 2026
Engraved portrait of Patrick Corbin
week 25
this weekSELL
last weekHOLD

Patrick Corbin

data as of September 10, 2026·week 25
ON THE 60-DAY IL
flipped from HOLD
Sell stable xERA 5.50 +1.40 vs league with no luck excuse; move on.high 0.90
ROSK 9ERA 5.01WHIP 1.39W 0–1SV 0

Corbin is a sell — the strikeout stuff is gone and the xERA shows it.

His expected ERA is 5.50, a run and a half above the league average of 4.10, and his sample is past the point where that number becomes reliable. There is no unlucky surface line to explain it away — his expected wOBA allowed of .356 is 41 points above league, and he does not miss bats. He strikes out 17.5% of batters against a league average of 22%, and his swinging-strike rate of 10% is below league, with a fastball averaging 91.3 mph against a league average of 94.0. When you allow contact this hard — 42.1% hard-hit, above league — without an above-average strikeout rate to offset it, the runs are the level he is at, not a slump. His walk rate is fine at 6.9%, but that is the only number working in his favor, and xERA has only stepped up as the sample has grown. There is no luck coming back. Sell. 9 K and a 5.01 ERA ROS: streaming-only fringe arm, pure waiver-wire drop.

VS His Norm

  • Strikeout %17.5%−3.5%vs his ~21.0% career norm
  • Walk %6.9%−0.2%vs his ~7.1% career norm

Drivers

  • xeraSIGNALstable xERA 5.50 +1.40 vs league with no luck excuse
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed42.1%
42.1%*
lg avg 40.0% +2.1%vs his norm —
266 / 50 BBE
Barrel % Allowed7.5%
7.5%*
lg avg 8.0% −0.5%vs his norm —
266 / 60 BBE
xwOBA Allowed.356
.356*
lg avg .315 +.041vs his norm —
360 / 200 TBF
xERA5.50
5.50*
lg avg 4.10 +1.40vs his norm —
360 / 200 TBF
ERA5.51
5.51*
lg avg 4.10 +1.41vs his norm —ERA is above the ~4.10 league averageexpect it to fall.
80 / 200 IP
Strikeout %17.5%
norm17.5%*
lg avg 22.0% −4.5%vs his norm −3.5%
360 / 70 TBF
Walk %6.9%
norm6.9%*
lg avg 8.0% −1.1%vs his norm −0.2%
360 / 170 TBF
BABIP Against.340
.340*
lg avg .295 +.045vs his norm —BABIP Against is above the ~.295 league averageexpect it to fall.
266 / 800 BIP
Swinging-Strike %10.0%
10.0%*
lg avg 11.0% −1.0%vs his norm —
360 / 60 TBF
Chase %30.7%
30.7%*
lg avg 28.5% +2.2%vs his norm —
360 / 60 TBF
Fastball Velo91.3 mph
91.3 mph*
lg avg 94.0 mph −2.7 mphvs his norm —
1412 / 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% 17.5%→18.8%signal9 K — K% 17.5% (signal) lifted to career ~21.0% → projected 18.8% over ~12 remaining IP.
xERA 5.50signal5.01 ERA — xERA 5.50 (signal) blended 65% skill / 35% league 4.10 at 49 IP.
BB% 6.9% + contactsignal1.39 WHIP — a 7% walk rate plus BABIP-against 0.310 gives a 1.44 skill WHIP, blended 65…
run support + role0-1 W — wins ride run support and how deep he goes, not just skill.
role (starter)0 SV — role: starter, not in the save mix.
rosterdrop9 K ROS, 5.01 ERA

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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