Is Fernando Tatis Jr. a buy or sell for fantasy baseball?

Buy — stable, above-average metrics signal genuine skill. Good ROS add target.

What is Fernando Tatis Jr.'s rest-of-season outlook?

54% hard-hit with .375 xwOBA — bat is screaming

629 PA · week 25

this weekBUY

last weekBUY

Fernando Tatis Jr.

SD·RF

data as of September 10, 2026·week 25

Buy stable xwOBA 0.375, +0.060 vs league, production is earned; elite, already-stable contact quality — BABIP 0.320 sits above league and is not yet stable, expect some of the average to regress; add now.med 0.72

ROSAVG .276HR 1R 4RBI 3SB 2

Tatis is a buy — elite contact, and the average will give some back.

His hard-hit rate is 54.2% against a league average of 40%, and it has been stepping up across the sample — that is a bat doing damage, not a hot streak. The expected wOBA backs it: .375, .060 above league, on 629 plate appearances, well past the point where the number becomes reliable. The catch is his actual line. His wOBA is .346, below his expected wOBA, because his BABIP is .320 against a league average of .295. BABIP needs around 800 balls in play to be reliable and he has 452, so some of that average will regress. The contact quality is the part that holds. Buy. Just 1 HR / 4 R / 3 RBI / 2 SB rest of season — a deep-league asset for the counting categories, not a must-add.

VS His Norm

Barrel %12.6%—+0.8% ▲vs his ~11.8% career norm

Drivers

xwobaSIGNALstable xwOBA 0.375, +0.060 vs league — production is earned
hard_hit_pctSIGNALelite, already-stable contact quality
babipNOISEBABIP 0.320 sits above league and is not yet stable — expect some of the average to regress

metric · nowrolling trajectoryvs. leaguestabilized?

Avg Exit Velo92.9 mph

lg avg 89.0 mph ▲+3.9 mphvs his norm —

452 / 50 BBE

Hard-Hit %54.2%

lg avg 40.0% ▲+14.2%vs his norm —

452 / 50 BBE

Barrel %12.6%

lg avg 8.0% ▲+4.6%vs his norm +0.8% ▲

452 / 60 BBE

xwOBA.375

lg avg .315 ▲+.060vs his norm —

629 / 160 PA

wOBA.346

lg avg .315 ▲+.031vs his norm —

629 / 200 PA

Strikeout %18.4%

lg avg 22.0% ▼−3.6%vs his norm —

629 / 60 PA

Walk %8.9%

lg avg 8.5% ▲+0.4%vs his norm —

629 / 120 PA

BABIP.320

lg avg .295 ▲+.025vs his norm +.015 ▲BABIP is above his ~.305 norm — expect it to fall.

452 / 800 BIP

Swinging-Strike %12.3%

lg avg 11.0% ▲+1.3%vs his norm —

629 / 50 PA

Chase %26.3%

lg avg 28.5% ▼−2.2%vs his norm —

629 / 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% 12.6%→12.4%signal1 HR — Barrel% 12.6% (signal) tempered to career ~11.8% → projected 12.4%.

BABIP 0.320→0.344 regressednoise.276 AVG — BABIP 0.320 is noise, regressed toward xBA-implied 0.375 (xBA 0.297) → 0.344.

on-base + lineup4 R — his run rate over ~44 projected PA.

slugging + lineup3 RBI — his RBI rate over ~44 projected PA.

run rate / role2 SB — his steal rate (14 in 57 G) over ~44 projected PA.

rosterdeeprotational 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.

VS His Norm

Drivers

5×5 ROS Outlook

Comparisons