MLB Daily DeltaWeek 31 · October 26, 2026
Engraved portrait of Ryne Nelson
week 31
this weekSELL-HIGH
last weekSELL

Ryne Nelson

AZ·P
data as of October 26, 2026·week 31
flipped from SELL on October 26, 2026
Sell High luck-free xERA 5.30 is 0.35 above the ERA, regression coming — BABIP-against 0.262 suppressed and unstable, flattering the ERA; sell into the hype before regression.high 0.79
ROSK 0ERA 4.88WHIP 1.30W 0–0SV 0

Nelson is a sell-high — the ERA hides a shaky skill level.

His ERA is 4.95, and that number is better than the pitching underneath it. His BABIP-against is .262 against a league average of .295, and BABIP-against needs around 800 balls in play to be reliable — he has 278. Balls are falling for outs at a rate that will not hold, and his expected ERA already sits at 5.30, well above league average, with that gap stepping up as the sample grows. The contact allowed backs it: a .349 expected wOBA allowed and a 10.1% barrel rate, both clearly worse than league. He walks just 6.4% of batters, but a 17.6% strikeout rate below the league mark leaves him leaning on batted-ball luck. That luck is the whole story here. Sell high. A 0 K / 4.88 ERA / 1.30 WHIP rest-of-season line is waiver-wire fodder — treat him as streaming-only and sell the inflated number now.

VS His Norm

  • Strikeout %17.6%—−1.4% ▼vs his ~19.1% career norm
  • Walk %6.4%—−0.2% ▼vs his ~6.6% career norm

Drivers

  • babip_againstNOISEBABIP-against 0.262 suppressed and unstable — flattering the ERA
  • xeraSIGNALluck-free xERA 5.30 is 0.35 above the ERA — regression coming
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed43.9%
43.9%*
lg avg 40.0% ▲+3.9%vs his norm —
278 / 50 BBE
Barrel % Allowed10.1%
10.1%*
lg avg 8.0% ▲+2.1%vs his norm —
278 / 60 BBE
xwOBA Allowed.349
.349*
lg avg .315 ▲+.034vs his norm —
374 / 200 TBF
xERA5.30
5.30*
lg avg 4.10 ▲+1.20vs his norm —
374 / 200 TBF
ERA4.95
4.95*
lg avg 4.10 ▲+0.85vs his norm —ERA is above the ~4.10 league average — expect it to fall.
87.3 / 200 IP
Strikeout %17.6%
norm17.6%*
lg avg 22.0% ▼−4.4%vs his norm −1.4% ▼
374 / 70 TBF
Walk %6.4%
norm6.4%*
lg avg 8.0% ▼−1.6%vs his norm −0.2% ▼
374 / 170 TBF
BABIP Against.262
.262*
lg avg .295 ▼−.033vs his norm —BABIP Against is below the ~.295 league average — expect it to rise.
278 / 800 BIP
Swinging-Strike %11.5%
11.5%*
lg avg 11.0% ▲+0.5%vs his norm —
374 / 60 TBF
Chase %33.7%
33.7%*
lg avg 28.5% ▲+5.2%vs his norm —
374 / 60 TBF
Fastball Velo96.4 mph
96.4 mph*
lg avg 94.0 mph ▲+2.4 mphvs his norm —
1374 / 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% 17.6%→18.1%signal0 K — K% 17.6% (signal) lifted to career ~19.1% → projected 18.1% over ~0 remaining IP.
xERA 5.30signal4.88 ERA — xERA 5.30 (signal) blended 65% skill / 35% league 4.10 at 65 IP.
BB% 6.4% + contactsignal1.30 WHIP — a 6% walk rate plus BABIP-against 0.283 gives a 1.30 skill WHIP.
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, 4.88 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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