MLB Daily DeltaWeek 31 · October 26, 2026
Engraved portrait of Mason Montgomery
week 31
this weekBUY
last weekHOLD

Mason Montgomery

PIT·P
data as of October 26, 2026·week 31
flipped from HOLD on October 26, 2026
Buy stable xERA 2.53, 1.57 below league, production is earned; velocity stable and above league; add now.high 0.92
ROSK 0ERA 2.53WHIP 1.12W 0–0SV 0

Montgomery is a buy — the strikeout stuff is real and earned

His expected ERA is 2.53, a run and a half below the league average of 4.10, and it has moved in the right direction as the sample has grown — this is a skill number trending the right way, not a fluke that happened to land low. The reason is the swing-and-miss: he strikes out 37.8% of batters against a 22% league mark, with a 16% swinging-strike rate, and at 278 batters faced that rate is well past the point where it becomes trustworthy. His velocity backs it up, sitting at 98.5 mph and climbing. The one soft spot is the walk rate at 9.4%, a touch above league, but that is a control question, not a command-of-the-zone collapse. He is missing bats at a rate the league has not matched. Buy. At 2.53 ERA and 1.12 WHIP rest-of-season, that swing-and-miss is a standard-league asset — go acquire.

VS His Norm

  • Strikeout %37.8%—+5.7% ▲vs his ~32.1% career norm
  • Walk %9.4%—−2.8% ▼vs his ~12.2% career norm

Drivers

  • xeraSIGNALstable xERA 2.53, 1.57 below league — production is earned
  • p_fastball_veloSIGNALvelocity stable and above league
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed42.5%
42.5%*
lg avg 40.0% ▲+2.5%vs his norm —
146 / 50 BBE
Barrel % Allowed6.2%
believable since Jun 76.2%*
lg avg 8.0% ▼−1.8%vs his norm —
146 / 60 BBE
xwOBA Allowed.247
.247*
lg avg .315 ▼−.068vs his norm —
278 / 200 TBF
xERA2.53
2.53*
lg avg 4.10 ▼−1.57vs his norm —
278 / 200 TBF
ERA2.88
2.88*
lg avg 4.10 ▼−1.22vs his norm —ERA is below the ~4.10 league average — expect it to rise.
68.7 / 200 IP
Strikeout %37.8%
norm37.8%*
lg avg 22.0% ▲+15.8%vs his norm +5.7% ▲
278 / 70 TBF
Walk %9.4%
norm9.4%*
lg avg 8.0% ▲+1.4%vs his norm −2.8% ▼
278 / 170 TBF
BABIP Against.279
.279*
lg avg .295 ▼−.016vs his norm —BABIP Against is below the ~.295 league average — expect it to rise.
146 / 800 BIP
Swinging-Strike %16.0%
16.0%*
lg avg 11.0% ▲+5.0%vs his norm —
278 / 60 TBF
Chase %32.6%
32.6%*
lg avg 28.5% ▲+4.1%vs his norm —
278 / 60 TBF
Fastball Velo98.5 mph
98.5 mph*
lg avg 94.0 mph ▲+4.5 mphvs his norm —
1169 / 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% 37.8%→35.4%signal0 K — K% 37.8% (signal) tempered to career ~32.1% → projected 35.4% over ~0 remaining IP.
xERA 2.53signal2.53 ERA — regresses up toward xERA 2.53 (signal): elite skill, but overperforming even…
BB% 9.4% + contactsignal1.12 WHIP — a 9% walk rate plus BABIP-against 0.292 gives a 1.12 skill WHIP.
run support + role0-0 W — wins ride run support and how deep he goes, not just skill.
role (setup)0 SV — role: setup, not in the save mix.
rosterstandard2.53 ERA, 1.12 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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