MLB Daily DeltaWeek 17 · July 18, 2026
Engraved portrait of Ryne Nelson
week 17
this weekSELL
last weekSELL

Ryne Nelson

AZ·P
data as of July 18, 2026·week 17
ON THE 60-DAY IL
Sell stable xERA 5.20 +1.10 vs league with no luck excuse; move on.high 0.88
ROSK 47ERA 4.82WHIP 1.28W 1–2SV 0

Nelson is a sell — his skill is below league with no luck excuse.

His expected ERA sits at 5.20, a full run above the league average of 4.10, and he has faced enough batters for that number to be reliable. His actual ERA is likely similar — his BABIP-against is near league average, so the ERA is not being held down by bad luck. His strikeout rate is 17.5%, well below the 22% league average, and batters are making hard contact against him: a 43.4% hard-hit rate allowed and 10.2% barrel rate, both above league averages. His chase rate is elevated at 34.1%, but that has not translated into whiffs or weak contact. The xERA has been stepping up across the sample, meaning his early results may have masked a trend in the wrong direction. There is no luck story to fall back on; this is the level he is at. Sell. 47 K and a 4.82 ERA make this a clear drop — the strikeout rate just doesn't support a roster spot.

VS His Norm

  • Strikeout %17.5%—−1.6% ▼vs his ~19.1% career norm
  • Walk %6.2%—−0.4% ▼vs his ~6.6% career norm

Drivers

  • xeraSIGNALstable xERA 5.20 +1.10 vs league with no luck excuse
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed43.4%
43.4%*
lg avg 40.0% ▲+3.4%vs his norm —
265 / 50 BBE
Barrel % Allowed10.2%
10.2%*
lg avg 8.0% ▲+2.2%vs his norm —
265 / 60 BBE
xwOBA Allowed.349
.349*
lg avg .315 ▲+.034vs his norm —
355 / 200 TBF
xERA5.20
5.20*
lg avg 4.10 ▲+1.10vs his norm —
355 / 200 TBF
ERA4.97
4.97*
lg avg 4.10 ▲+0.87vs his norm —ERA is above the ~4.10 league average — expect it to fall.
83.3 / 200 IP
Strikeout %17.5%
norm17.5%*
lg avg 22.0% ▼−4.5%vs his norm −1.6% ▼
355 / 70 TBF
Walk %6.2%
norm6.2%*
lg avg 8.0% ▼−1.8%vs his norm −0.4% ▼
355 / 170 TBF
BABIP Against.255
.255*
lg avg .295 ▼−.040vs his norm —BABIP Against is below the ~.295 league average — expect it to rise.
265 / 800 BIP
Swinging-Strike %11.4%
11.4%*
lg avg 11.0% ▲+0.4%vs his norm —
355 / 60 TBF
Chase %34.1%
34.1%*
lg avg 28.5% ▲+5.6%vs his norm —
355 / 60 TBF
Fastball Velo96.3 mph
96.3 mph*
lg avg 94.0 mph ▲+2.3 mphvs his norm —
1292 / 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%→18.1%signal47 K — K% 17.5% (signal) lifted to career ~19.1% → projected 18.1% over ~58 remaining IP.
xERA 5.20signal4.82 ERA — xERA 5.20 (signal) blended 65% skill / 35% league 4.10 at 65 IP.
BB% 6.2% + contactsignal1.28 WHIP — a 6% walk rate plus BABIP-against 0.282 gives a 1.28 skill WHIP.
run support + role1-2 W — wins ride run support and how deep he goes, not just skill.
role (starter)0 SV — role: starter, not in the save mix.
rosterdrop47 K ROS, 4.82 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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