MLB Daily DeltaWeek 17 · July 18, 2026
Engraved portrait of Merrill Kelly
week 17
this weekSELL
last weekSELL-HIGH

Merrill Kelly

AZ·P
data as of July 18, 2026·week 17
flipped from SELL-HIGH on July 18, 2026
Sell stable xERA 7.44 +3.34 vs league with no luck excuse; strikeout rate 14% is stable and well below league, limits the ceiling; move on.high 0.90
ROSK 41ERA 6.27WHIP 1.44W 3–7SV 0

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

His expected ERA is 7.44, more than three runs above league average, and he has faced enough batters for that number to be reliable. The tools that drive run prevention are all moving the wrong way: he strikes out only 14.4% of batters, well below his career baseline of 21.6% and trending down. His walk rate is slightly above league, and his chase rate is elevated — batters are making more contact and harder contact. The 43.7% hard-hit rate and 14.1% barrel rate allowed are well above average, and a fastball that averages 92.2 mph doesn't miss enough bats. There is no BABIP story to lean on; this is just a pitcher who is not getting outs. Sell. 41 K with a 6.27 ERA makes him a streaming-only arm in deep leagues; move on.

VS His Norm

  • Strikeout %14.4%—−7.2% ▼vs his ~21.6% career norm
  • Walk %9.2%—+1.8% ▲vs his ~7.4% career norm

Drivers

  • xeraSIGNALstable xERA 7.44 +3.34 vs league with no luck excuse
  • p_k_pctSIGNALstrikeout rate 14% is stable and well below league — limits the ceiling
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed43.7%
43.7%*
lg avg 40.0% ▲+3.7%vs his norm —
311 / 50 BBE
Barrel % Allowed14.1%
14.1%*
lg avg 8.0% ▲+6.1%vs his norm —
311 / 60 BBE
xwOBA Allowed.405
believable since May 25.405*
lg avg .315 ▲+.090vs his norm —
411 / 200 TBF
xERA7.44
7.44*
lg avg 4.10 ▲+3.34vs his norm —
411 / 200 TBF
ERA5.38
5.38*
lg avg 4.10 ▲+1.28vs his norm —ERA is above the ~4.10 league average — expect it to fall.
93.7 / 200 IP
Strikeout %14.4%
norm14.4%*
lg avg 22.0% ▼−7.6%vs his norm −7.2% ▼
411 / 70 TBF
Walk %9.2%
norm9.2%*
lg avg 8.0% ▲+1.2%vs his norm +1.8% ▲
411 / 170 TBF
BABIP Against.286
.286*
lg avg .295 ▼−.009vs his norm —BABIP Against is below the ~.295 league average — expect it to rise.
311 / 800 BIP
Swinging-Strike %10.3%
10.3%*
lg avg 11.0% ▼−0.7%vs his norm —
411 / 60 TBF
Chase %34.0%
34.0%*
lg avg 28.5% ▲+5.5%vs his norm —
411 / 60 TBF
Fastball Velo92.2 mph
92.2 mph*
lg avg 94.0 mph ▼−1.8 mphvs his norm —
1479 / 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% 14.4%→16.7%signal41 K — K% 14.4% (signal) lifted to career ~21.6% → projected 16.7% over ~56 remaining IP.
xERA 7.44signal6.27 ERA — xERA 7.44 (signal) blended 65% skill / 35% league 4.10 at 53 IP.
BB% 9.2% + contactsignal1.44 WHIP — a 9% walk rate plus BABIP-against 0.291 gives a 1.52 skill WHIP, blended 65…
run support + role3-7 W — wins ride run support and how deep he goes, not just skill.
role (starter)0 SV — role: starter, not in the save mix.
rosterdrop41 K ROS, 6.27 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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