MLB Daily DeltaWeek 27 · September 27, 2026
Brycen Mautz
STL · 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

Brycen Mautz 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
Brycen Mautz
93.5
Kirby Yates
90.8
Swinging-Strike %lg 11.0% · higher = better
Brycen Mautz
13.9%
Kirby Yates
14.9%
Strikeout %lg 22.0% · higher = better
Brycen Mautz
25.3%
Kirby Yates
27.9%
Chase %lg 28.5% · higher = better
Brycen Mautz
23.3%
Kirby Yates
35.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Brycen Mautz
30.2%
Kirby Yates
46.6%
Barrel % Allowedlg 8.0% · lower = better
Brycen Mautz
9.3%
Kirby Yates
5.8%
xwOBA Allowedlg .315 · lower = better
Brycen Mautz
.357
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
Brycen Mautz
28.25
lg xERA 4.10
now 9.00
3.70
Kirby Yates
28.25
lg xERA 4.10
now 4.32
3.70
WHIPlower is better
Brycen Mautz
.9002.32
now 2.00
1.24
Kirby Yates
.9002.32
now 1.20
1.24

Volume · rest of season
Strikeoutshigher is better
Brycen Mautz
4015.60
now 10
0
Kirby Yates
4015.60
now 10
0
Winshigher is better
Brycen Mautz
.000.480
now 0
0–0
Kirby Yates
.000.480
now 0
0–0

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

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