MLB Daily DeltaWeek 25 · September 11, 2026
Portrait of Casey Mize
Casey Mize
SD · P
Change to
Matthew Boyd
CHC · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 22. Take whoever fills a bigger need.

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

Casey Mize wins 2 (ERA, WHIP); Matthew Boyd wins 2 (K, W); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Casey Mize
93.4
Matthew Boyd
92.7
Swinging-Strike %lg 11.0% · higher = better
Casey Mize
11.7%
Matthew Boyd
10.9%
Strikeout %lg 22.0% · higher = better
Casey Mize
22.0%
Matthew Boyd
19.1%
Chase %lg 28.5% · higher = better
Casey Mize
29.3%
Matthew Boyd
32.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Casey Mize
39.7%
Matthew Boyd
38.3%
Barrel % Allowedlg 8.0% · lower = better
Casey Mize
8.3%
Matthew Boyd
9.0%
xwOBA Allowedlg .315 · lower = better
Casey Mize
.289
Matthew Boyd
.331
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
Casey Mize
27.49
lg xERA 4.10
now 2.27
3.48
Matthew Boyd
27.49
lg xERA 4.10
now 6.00
4.47
WHIPlower is better
Casey Mize
.9001.46
now 0.97
1.21
Matthew Boyd
.9001.46
now 1.29
1.32

Volume · rest of season
Strikeoutshigher is better
Casey Mize
4064.20
now 49
11
Matthew Boyd
4064.20
now 31
14
Winshigher is better
Casey Mize
.0002.80
now 2
01
Matthew Boyd
.0002.80
now 2
11

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

If you already own them — trade angle
BuyCasey Mize — buy.conf 0.79
SellMatthew Boyd — sell.conf 0.72
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