MLB Daily DeltaWeek 17 · July 18, 2026
Engraved portrait of Fernando Tatis Jr.
416 PA · week 17
this weekBUY
last weekBUY

Fernando Tatis Jr.

data as of July 18, 2026·week 17
Buy stable xwOBA 0.343, +0.028 vs league, production is earned; elite, already-stable contact quality — BABIP 0.344 sits above league and is not yet stable, expect some of the average to regress; add now.med 0.66
ROSHR 6AVG .286R 17RBI 14SB 11

Tatis is a buy — elite contact, growing skill.

His expected wOBA is .343, .028 above league average, and his 416 plate appearances make that number reliable. His actual wOBA sits at .316, 27 points below the expected value, meaning bad luck on balls in play is suppressing the surface line — not the other way around. His contact quality is elite and getting better: a 52.6% hard-hit rate and 91.8 mph average exit velocity, both well above league and stable after 291 batted balls. His barrel rate and strikeout-to-walk ratios are all solid. The .344 BABIP will regress toward .295, but that will pull the actual line toward the expected wOBA, not away. The skill is real and trending up. The 11 swipes and .286 AVG make him a buy-low asset before the 6 HR and counting line catches up to the skill.

VS His Norm

  • Barrel %10.7%−1.1%vs his ~11.8% career norm

Drivers

  • xwobaSIGNALstable xwOBA 0.343, +0.028 vs league — production is earned
  • hard_hit_pctSIGNALelite, already-stable contact quality
  • babipNOISEBABIP 0.344 sits above league and is not yet stable — expect some of the average to regress
metric · nowrolling trajectoryvs. leaguestabilized?
Avg Exit Velo91.8 mph
91.8 mph*
lg avg 89.0 mph +2.8 mphvs his norm —
291 / 50 BBE
Hard-Hit %52.6%
52.6%*
lg avg 40.0% +12.6%vs his norm —
291 / 50 BBE
Barrel %10.7%
norm10.7%*
lg avg 8.0% +2.7%vs his norm −1.1%
291 / 60 BBE
xwOBA.343
.343*
lg avg .315 +.028vs his norm —
416 / 160 PA
wOBA.316
.316*
lg avg .315 +.001vs his norm —
416 / 200 PA
Strikeout %20.9%
20.9%*
lg avg 22.0% −1.1%vs his norm —
416 / 60 PA
Walk %8.2%
8.2%*
lg avg 8.5% −0.3%vs his norm —
416 / 120 PA
BABIP.344
norm.344*
lg avg .295 +.049vs his norm +.039 BABIP is above his ~.305 normexpect it to fall.
291 / 800 BIP
Swinging-Strike %13.7%
13.7%*
lg avg 11.0% +2.7%vs his norm —
416 / 50 PA
Chase %27.6%
27.6%*
lg avg 28.5% −0.9%vs his norm —
416 / 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% 10.7%→11.2%signal6 HR — Barrel% 10.7% (signal) lifted to career ~11.8% → projected 11.2%.
BABIP 0.344→0.350 regressednoise.286 AVG — BABIP 0.344 is noise, regressed toward xBA-implied 0.353 (xBA 0.280) → 0.350.
on-base + lineup17 R — his run rate over ~196 projected PA.
slugging + lineup14 RBI — his RBI rate over ~196 projected PA.
run rate / role11 SB — his steal rate (14 in 57 G) over ~196 projected PA.
rosterstandard25 SB, .286 AVG

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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