MLB Daily DeltaWeek 17 · July 18, 2026
Engraved portrait of Joe Mack
172 PA · week 17
this weekHOLD
last weekNO CALL

Joe Mack

data as of July 18, 2026·week 17
new call as of July 18, 2026
Hold · steady skill near league average (0.311); hold steady — skill tracks near league, no edge either way.med 0.60
ROSHR 3AVG .241R 14RBI 12SB 0

Mack is a hold — near league average, no edge either way.

His expected wOBA sits at .311, essentially league average, and the sample has cleared the stabilization point for reliability. But that number has been stepping down across the sample, which means the trending is backward rather than forward. His contact quality stats — exit velocity, hard-hit rate, barrel rate — all hover around league average, and his strikeout and walk rates are similarly unexceptional. Nothing here is unstable enough to suggest a pending breakout or a regression. He strikes out at a slightly above-average clip and walks below the league rate, but the gaps are small. There is no luck story driving his line, no hidden skill to buy, and no mirage to sell. He is what the numbers show: a roughly average player. Hold. At 3 HR with no SB and a .241 AVG, he's a borderline drop in shallower leagues.

Drivers

  • xwobaSIGNALskill near league average (0.311)
metric · nowrolling trajectoryvs. leaguestabilized?
Avg Exit Velo88.7 mph
believable since Jun 688.7 mph*
lg avg 89.0 mph −0.3 mphvs his norm —
118 / 50 BBE
Hard-Hit %37.3%
37.3%*
lg avg 40.0% −2.7%vs his norm —
118 / 50 BBE
Barrel %8.5%
8.5%*
lg avg 8.0% +0.5%vs his norm —
118 / 60 BBE
xwOBA.311
.311*
lg avg .315 −.004vs his norm —
172 / 160 PA
wOBA.319
.319*
lg avg .315 +.004vs his norm —wOBA is above the ~.315 league averageexpect it to fall.
172 / 200 PA
Strikeout %23.3%
23.3%*
lg avg 22.0% +1.3%vs his norm —
172 / 60 PA
Walk %7.0%
7.0%*
lg avg 8.5% −1.5%vs his norm —
172 / 120 PA
BABIP.287
.287*
lg avg .295 −.008vs his norm —BABIP is below the ~.295 league averageexpect it to rise.
118 / 800 BIP
Swinging-Strike %10.9%
10.9%*
lg avg 11.0% −0.1%vs his norm —
172 / 50 PA
Chase %25.9%
25.9%*
lg avg 28.5% −2.6%vs his norm —
172 / 50 PA

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
Barrel% 8.5%→8.4%signal3 HR — Barrel% 8.5% (signal) tempered to league ~8.0% → projected 8.4%.
BABIP 0.287→0.335 regressednoise.241 AVG — BABIP 0.287 is noise, regressed toward xBA-implied 0.343 (xBA 0.238) → 0.335.
on-base + lineup14 R — his run rate over ~147 projected PA.
slugging + lineup12 RBI — his RBI rate over ~147 projected PA.
run rate / role0 SB — his steal rate (0 in 22 G) over ~147 projected PA.
rosterdroprotational counting only

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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