MLB Daily DeltaWeek 25 · September 10, 2026
Engraved portrait of Dylan Lee
week 25
this weekBUY
last weekHOLD

Dylan Lee

data as of September 10, 2026·week 25
flipped from HOLD on September 10, 2026
Buy stable xERA 2.47, 1.63 below league, production is earned; add now.high 0.92
ROSK 6ERA 2.47WHIP 1.09W 0–1SV 0

Dylan Lee is a buy — 2.47 expected ERA, no luck involved.

His expected ERA is 2.47, a full 1.63 runs better than the league average of 4.10, and he has faced enough batters for that number to be reliable. He strikes out 31.4% of hitters, well above league average, and walks only 6.3% — the command and stuff are both there. He gets swings on 35.6% of pitches outside the zone, which is how the strikeout rate holds up. The contact he allows is weak: a .245 expected wOBA against, and his hard-hit rate allowed of 32.2% is well below the 40% league mark. The expected ERA has stepped down as the sample has grown, so this is not a number being held down by balls finding gloves. He earns his outs. Buy. With a 2.47 ERA and 1.09 WHIP ROS, this arm is a standard-league asset — acquire before the ratios sell the case for you.

VS His Norm

  • Strikeout %31.4%+1.7%vs his ~29.7% career norm
  • Walk %6.3%+0.6%vs his ~5.7% career norm

Drivers

  • xeraSIGNALstable xERA 2.47, 1.63 below league — production is earned
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed32.2%
32.2%*
lg avg 40.0% −7.8%vs his norm —
149 / 50 BBE
Barrel % Allowed5.4%
believable since May 265.4%*
lg avg 8.0% −2.6%vs his norm —
149 / 60 BBE
xwOBA Allowed.245
.245*
lg avg .315 −.070vs his norm —
239 / 200 TBF
xERA2.47
2.47*
lg avg 4.10 −1.63vs his norm —
239 / 200 TBF
ERA2.61
2.61*
lg avg 4.10 −1.49vs his norm —ERA is below the ~4.10 league averageexpect it to rise.
62 / 200 IP
Strikeout %31.4%
norm31.4%*
lg avg 22.0% +9.4%vs his norm +1.7%
239 / 70 TBF
Walk %6.3%
norm6.3%*
lg avg 8.0% −1.7%vs his norm +0.6%
239 / 170 TBF
BABIP Against.257
.257*
lg avg .295 −.038vs his norm —BABIP Against is below the ~.295 league averageexpect it to rise.
149 / 800 BIP
Swinging-Strike %19.2%
19.2%*
lg avg 11.0% +8.2%vs his norm —
239 / 60 TBF
Chase %35.6%
35.6%*
lg avg 28.5% +7.1%vs his norm —
239 / 60 TBF
Fastball Velo93.3 mph
93.3 mph*
lg avg 94.0 mph −0.7 mphvs his norm —
977 / 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% 31.4%→30.6%signal6 K — K% 31.4% (signal) tempered to career ~29.7% → projected 30.6% over ~5 remaining IP.
xERA 2.47signal2.47 ERA — regresses up toward xERA 2.47 (signal): elite skill, but overperforming even…
BB% 6.3% + contactsignal1.09 WHIP — a 6% walk rate plus BABIP-against 0.288 gives a 1.09 skill WHIP.
run support + role0-1 W — wins ride run support and how deep he goes, not just skill.
role (setup)0 SV — role: setup, not in the save mix.
rosterstandard2.47 ERA, 1.09 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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