MLB Daily DeltaWeek 31 · October 26, 2026
Engraved portrait of Brayan Bello
week 31
this weekSELL
last weekSELL

Brayan Bello

BOS·P
data as of October 26, 2026·week 31
Sell stable xERA 4.89 +0.79 vs league with no luck excuse; move on.high 0.79
ROSK 0ERA 4.61WHIP 1.37W 0–0SV 0

Bello is a sell — the contact he allows is a run worse than league.

His expected ERA is 4.89, .79 above the league average of 4.10, and he has faced 503 batters — well past the point where that number becomes reliable. There is no luck story to soften it: his hard-hit rate allowed (40.2%) and barrel rate allowed (7.3%) are right at league average, so batted balls are falling the way they should, not unusually badly. His xwOBA allowed is .337 against a .315 league average, and that gap is the run prevention he's actually giving you. The strikeout rate explains it — 18.3% against a 22% league mark means he isn't missing enough bats to offset the contact. The xERA has been climbing across the sample, which is the opposite of a correction. The surface will keep tracking the skill. Sell. 0 K and a 4.61 ERA rest of season makes him a drop — a waiver-wire arm, not a hold.

VS His Norm

  • Strikeout %18.3%—−1.1% ▼vs his ~19.4% career norm
  • Walk %7.2%—−1.1% ▼vs his ~8.3% career norm

Drivers

  • xeraSIGNALstable xERA 4.89 +0.79 vs league with no luck excuse
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed40.2%
40.2%*
lg avg 40.0% ▲+0.2%vs his norm —
368 / 50 BBE
Barrel % Allowed7.3%
7.3%*
lg avg 8.0% ▼−0.7%vs his norm —
368 / 60 BBE
xwOBA Allowed.337
.337*
lg avg .315 ▲+.022vs his norm —
503 / 200 TBF
xERA4.89
4.89*
lg avg 4.10 ▲+0.79vs his norm —
503 / 200 TBF
ERA4.33
4.33*
lg avg 4.10 ▲+0.23vs his norm —ERA is above the ~4.10 league average — expect it to fall.
116.3 / 200 IP
Strikeout %18.3%
norm18.3%*
lg avg 22.0% ▼−3.7%vs his norm −1.1% ▼
503 / 70 TBF
Walk %7.2%
norm7.2%*
lg avg 8.0% ▼−0.8%vs his norm −1.1% ▼
503 / 170 TBF
BABIP Against.313
.313*
lg avg .295 ▲+.018vs his norm —BABIP Against is above the ~.295 league average — expect it to fall.
368 / 800 BIP
Swinging-Strike %12.3%
12.3%*
lg avg 11.0% ▲+1.3%vs his norm —
503 / 60 TBF
Chase %32.6%
32.6%*
lg avg 28.5% ▲+4.1%vs his norm —
503 / 60 TBF
Fastball Velo95.8 mph
95.8 mph*
lg avg 94.0 mph ▲+1.8 mphvs his norm —
1906 / 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% 18.3%→18.6%signal0 K — K% 18.3% (signal) lifted to career ~19.4% → projected 18.6% over ~0 remaining IP.
xERA 4.89signal4.61 ERA — xERA 4.89 (signal) blended 65% skill / 35% league 4.10 at 56 IP.
BB% 7.2% + contactsignal1.37 WHIP — a 7% walk rate plus BABIP-against 0.303 gives a 1.41 skill WHIP, blended 65…
run support + role0-0 W — wins ride run support and how deep he goes, not just skill.
role (starter)0 SV — role: starter, not in the save mix.
rosterdrop0 K ROS, 4.61 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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