MLB Daily DeltaWeek 27 · September 27, 2026
Engraved portrait of Janson Junk
week 27
this weekHOLD
last weekHOLD

Janson Junk

data as of September 27, 2026·week 27
Hold · leans sell skill near league average (4.26); a hold that leans sell — skill sits a hair below league, nothing to chase.med 0.60
ROSK 0ERA 4.20WHIP 1.35W 0–0SV 0

Junk is a hold — league average, nothing unstable to sell.

His expected ERA is 4.26, close to the league average of 4.10, and his sample of 505 batters faced is well past the point where that number becomes reliable. His xwOBA allowed of .317 sits right at the .315 league average. The contact quality he allows is near league level: a 38.5% hard-hit rate allowed and 7.0% barrel rate allowed, both slightly below league and based on 384 batted balls, enough to trust. His walk rate is 6.3%, better than the 8.0% league average, but he strikes out only 16.6% of batters against a 22.0% league mark and gets swings and misses on just 7.4% of pitches. His expected ERA has been stepping up across the sample, so there is no hidden edge here. Nothing to buy, nothing to sell. Hold. 0 K and 4.20 ERA ROS make him a drop — no strikeout upside, no ratio help, just a fringe arm to cut.

VS His Norm

  • Walk %6.3%—+2.1% ▲vs his ~4.2% career norm
  • Strikeout %16.6%—−0.7% ▼vs his ~17.3% career norm

Drivers

  • xeraSIGNALskill near league average (4.26)
metric · nowrolling trajectoryvs. leaguestabilized?
Hard-Hit % Allowed38.5%
38.5%*
lg avg 40.0% ▼−1.5%vs his norm —
384 / 50 BBE
Barrel % Allowed7.0%
7.0%*
lg avg 8.0% ▼−1.0%vs his norm —
384 / 60 BBE
xwOBA Allowed.317
.317*
lg avg .315 ▲+.002vs his norm —
505 / 200 TBF
xERA4.26
4.26*
lg avg 4.10 ▲+0.16vs his norm —
505 / 200 TBF
ERA4.31
4.31*
lg avg 4.10 ▲+0.21vs his norm —ERA is above the ~4.10 league average — expect it to fall.
119 / 200 IP
Strikeout %16.6%
norm16.6%*
lg avg 22.0% ▼−5.4%vs his norm −0.7% ▼
505 / 70 TBF
Walk %6.3%
norm6.3%*
lg avg 8.0% ▼−1.7%vs his norm +2.1% ▲
505 / 170 TBF
BABIP Against.298
.298*
lg avg .295 ▲+.003vs his norm —BABIP Against is above the ~.295 league average — expect it to fall.
384 / 800 BIP
Swinging-Strike %7.4%
7.4%*
lg avg 11.0% ▼−3.6%vs his norm —
505 / 60 TBF
Chase %28.4%
28.4%*
lg avg 28.5% ▼−0.1%vs his norm —
505 / 60 TBF
Fastball Velo94.1 mph
94.1 mph*
lg avg 94.0 mph ▲+0.1 mphvs his norm —
1917 / 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% 16.6%→16.8%signal0 K — K% 16.6% (signal) held to career ~17.3% → projected 16.8% over ~0 remaining IP.
xERA 4.26signal4.20 ERA — xERA 4.26 (signal) blended 65% skill / 35% league 4.10 at 60 IP.
BB% 6.3% + contactsignal1.35 WHIP — a 6% walk rate plus BABIP-against 0.296 gives a 1.37 skill WHIP, blended 65…
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, 4.20 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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