MLB Daily DeltaWeek 27 · September 27, 2026
week 27
this weekHOLD
last weekHOLD

Luke Murphy

LAA·P
data as of September 27, 2026·week 27
Hold · wait & see BABIP-against 0.352 elevated and unstable, the 6.86 ERA overstates the damage; but luck-free xERA 4.44 is +0.34 vs league, the level it regresses to is below average, not a buy; hold and wait — key skill metric not yet stable enough to call.med 0.55
ROSK 0ERA 3.70WHIP 1.24W 0–0SV 0

Murphy is a hold — the ERA overstates it, but the skill is short.

His ERA is 6.86, and the stat dragging it there is BABIP-against: .352 against a league average of .295. That number is not reliable at 56 balls in play, and it needs around 800, so the damage on the scoreboard overstates what is actually happening. But the regression line is not exciting either. His expected ERA is 4.44, which is +0.34 against a league average of 4.1 — the level his skill points to is below average, not a buy. He strikes out 22.7% of batters, right at league, and his swinging-strike rate of 10% sits below league's 11%. He throws hard at 95.7 mph, but hard throwing without misses does not push him past average. Limited data here — this call rests on the first stable sample of the season. Fade the panic; don't chase the buy. Hold. 3.70 ERA and 1.24 WHIP ROS is a deep-league hold, not a streamer — no K help, no wins.

Drivers

  • babip_againstNOISEBABIP-against 0.352 elevated and unstable — the 6.86 ERA overstates the damage
  • xeraNOISEbut luck-free xERA 4.44 is +0.34 vs league — the level it regresses to is below average, not a buy
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed37.5%
believable since Sep 2437.5%*
lg avg 40.0% ▼−2.5%vs his norm —
56 / 50 BBE
Barrel % Allowed5.4%
5.4%*
lg avg 8.0% ▼−2.6%vs his norm —Barrel % Allowed is below the ~8.0% league average — expect it to rise.
56 / 60 BBE
xwOBA Allowed.323
.323*
lg avg .315 ▲+.008vs his norm —xwOBA Allowed is above the ~.315 league average — expect it to fall.
88 / 200 TBF
xERA4.44
4.44*
lg avg 4.10 ▲+0.34vs his norm —xERA is above the ~4.10 league average — expect it to fall.
88 / 200 TBF
ERA6.86
6.86*
lg avg 4.10 ▲+2.76vs his norm —ERA is above the ~4.10 league average — expect it to fall.
19.7 / 200 IP
Strikeout %22.7%
22.7%*
lg avg 22.0% ▲+0.7%vs his norm —
88 / 70 TBF
Walk %12.5%
12.5%*
lg avg 8.0% ▲+4.5%vs his norm —Walk % is above the ~8.0% league average — expect it to fall.
88 / 170 TBF
BABIP Against.352
.352*
lg avg .295 ▲+.057vs his norm —BABIP Against is above the ~.295 league average — expect it to fall.
56 / 800 BIP
Swinging-Strike %10.0%
10.0%*
lg avg 11.0% ▼−1.0%vs his norm —
88 / 60 TBF
Chase %27.4%
27.4%*
lg avg 28.5% ▼−1.1%vs his norm —
88 / 60 TBF
Fastball Velo95.7 mph
95.7 mph*
lg avg 94.0 mph ▲+1.7 mphvs his norm —
380 / 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% 22.7%→23.0%signal0 K — K% 22.7% (signal) held to RP mean ~24.0% → projected 23.0% over ~0 remaining IP.
xERA 4.44noise3.70 ERA — xERA 4.44 (noise) blended 0% skill / 100% league 3.70 at 1 IP.
BB% 12.5% + contactnoise1.24 WHIP — a 12% walk rate plus BABIP-against 0.299 gives a 1.54 skill WHIP, blended 0…
run support + role0-0 W — wins ride run support and how deep he goes, not just skill.
role (middle)0 SV — role: middle, not in the save mix.
rosterdeep3.70 ERA, 1.24 WHIP

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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