MLB Daily DeltaWeek 27 · September 27, 2026
Garrett Whitlock
BOS · P
Change to
Portrait of Kirby Yates
Kirby Yates
PIT · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 0–0, 4 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
WHIP
W
SV n/a

Garrett Whitlock wins 0 (none); Kirby Yates wins 0 (none); 4 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Garrett Whitlock
94.9
Kirby Yates
90.8
Swinging-Strike %lg 11.0% · higher = better
Garrett Whitlock
18.1%
Kirby Yates
14.9%
Strikeout %lg 22.0% · higher = better
Garrett Whitlock
29.8%
Kirby Yates
27.9%
Chase %lg 28.5% · higher = better
Garrett Whitlock
42.1%
Kirby Yates
35.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Garrett Whitlock
33.8%
Kirby Yates
46.6%
Barrel % Allowedlg 8.0% · lower = better
Garrett Whitlock
3.8%
Kirby Yates
5.8%
xwOBA Allowedlg .315 · lower = better
Garrett Whitlock
.251
Kirby Yates
.286
stabilized — trust it · small sample yet · dashed = league avg · right = better
05

The tape

Rest-of-season projection · bold = leads
rest-of-season projection current season projection range
Rate · earned-run quality
ERAlower is better
Garrett Whitlock
2.544.83
lg xERA 4.10
now 3.05
3.69
Kirby Yates
2.544.83
lg xERA 4.10
now 4.32
3.70
WHIPlower is better
Garrett Whitlock
1.041.31
now 1.11
1.24
Kirby Yates
1.041.31
now 1.20
1.24

Volume · rest of season
Strikeoutshigher is better
Garrett Whitlock
4036.40
now 26
0
Kirby Yates
4036.40
now 10
0
Winshigher is better
Garrett Whitlock
.0004.20
now 3
0–0
Kirby Yates
.0004.20
now 0
0–0

SV — not applicable. Both pitch out of the rotation.

If you already own them — trade angle
Hold · wait & seeGarrett Whitlock — hold.conf 0.50
Hold · wait & seeKirby Yates — hold.conf 0.50
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