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

Keider Montero

DET·P
data as of September 10, 2026·week 25
flipped from HOLD on September 10, 2026
Buy stable xERA 3.42, 0.68 below league, production is earned; velocity stable and above league; add now.high 0.80
ROSK 9ERA 3.42WHIP 1.18W 0–1SV 0

Montero is a buy — his expected ERA keeps stepping down

His xERA is 3.42 against a league average of 4.10, and he has faced enough batters for that number to be reliable. The direction matters too: it has been stepping down across the sample, while his fastball velocity has been stepping up to 94.4 mph, above the league mark. He gives up hard contact at 36.7%, below league, and barrels at 7.0%. The one caveat is a strikeout rate of 16.6%, well under league, so he is not missing bats — he is getting weak contact instead. A 5.5% walk rate is the quiet part of the profile; he does not hand out free bases. The run prevention is earned, not propped up by batted-ball luck. Buy. 9 K and a 3.42 ERA make him a deep-league asset, but that strikeout rate caps the ceiling — acquire as a streamer, not a hold.

VS His Norm

  • Walk %5.5%—−1.9% ▼vs his ~7.4% career norm
  • Strikeout %16.6%—−1.8% ▼vs his ~18.4% career norm

Drivers

  • xeraSIGNALstable xERA 3.42, 0.68 below league — production is earned
  • p_fastball_veloSIGNALvelocity stable and above league
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed36.7%
36.7%*
lg avg 40.0% ▼−3.3%vs his norm —
444 / 50 BBE
Barrel % Allowed7.0%
7.0%*
lg avg 8.0% ▼−1.0%vs his norm —
444 / 60 BBE
xwOBA Allowed.287
believable since May 26.287*
lg avg .315 ▼−.028vs his norm —
577 / 200 TBF
xERA3.42
3.42*
lg avg 4.10 ▼−0.68vs his norm —
577 / 200 TBF
ERA3.52
3.52*
lg avg 4.10 ▼−0.58vs his norm —ERA is below the ~4.10 league average — expect it to rise.
143 / 200 IP
Strikeout %16.6%
norm16.6%*
lg avg 22.0% ▼−5.4%vs his norm −1.8% ▼
577 / 70 TBF
Walk %5.5%
norm5.5%*
lg avg 8.0% ▼−2.5%vs his norm −1.9% ▼
577 / 170 TBF
BABIP Against.235
.235*
lg avg .295 ▼−.060vs his norm —BABIP Against is below the ~.295 league average — expect it to rise.
444 / 800 BIP
Swinging-Strike %8.8%
8.8%*
lg avg 11.0% ▼−2.2%vs his norm —
577 / 60 TBF
Chase %27.2%
27.2%*
lg avg 28.5% ▼−1.3%vs his norm —
577 / 60 TBF
Fastball Velo94.4 mph
94.4 mph*
lg avg 94.0 mph ▲+0.4 mphvs his norm —
2084 / 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% 16.6%→17.1%signal9 K — K% 16.6% (signal) lifted to career ~18.4% → projected 17.1% over ~13 remaining IP.
xERA 3.42signal3.42 ERA — regresses up toward xERA 3.42 (signal): elite skill, but overperforming even…
BB% 5.5% + contactsignal1.18 WHIP — a 6% walk rate plus BABIP-against 0.262 gives a 1.18 skill WHIP.
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.
rosterdeep9 K ROS, 3.42 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.

Tweet
Compare with

Comparisons

head-to-head matchups