MLB Daily DeltaWeek 25 · September 10, 2026
Portrait of Caleb Thielbar
Caleb Thielbar
CHC · P
Change to
Portrait of Mason Montgomery
Mason Montgomery
PIT · P
Change to
Who's more valuable, rest of season

Mason Montgomery.

He projects to help you in more roto categories the rest of the way — strikeouts, ERA, and WHIP. Caleb Thielbar’s box score looks better right now, but the luck-stripped projection flips it.

Head-to-head
K
ERA
WHIP
W
SV

Mason Montgomery wins 3 categories (K, ERA, WHIP); Caleb Thielbar wins 2 (W, SV).

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Caleb Thielbar
93.3
Mason Montgomery
98.4
Swinging-Strike %lg 11.0% · higher = better
Caleb Thielbar
14.6%
Mason Montgomery
16.3%
Strikeout %lg 22.0% · higher = better
Caleb Thielbar
29.2%
Mason Montgomery
37.9%
Chase %lg 28.5% · higher = better
Caleb Thielbar
36.5%
Mason Montgomery
32.4%
Hard-Hit % Allowedlg 40.0% · lower = better
Caleb Thielbar
39.8%
Mason Montgomery
40.9%
Barrel % Allowedlg 8.0% · lower = better
Caleb Thielbar
11.0%
Mason Montgomery
7.1%
xwOBA Allowedlg .315 · lower = better
Caleb Thielbar
.328
Mason Montgomery
.250
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
Caleb Thielbar
2.034.45
lg xERA 4.10
now 2.84
3.70
Mason Montgomery
2.034.45
lg xERA 4.10
now 3.91
2.57
WHIPlower is better
Caleb Thielbar
1.051.42
now 1.34
1.24
Mason Montgomery
1.051.42
now 1.26
1.13

Volume · rest of season
Strikeoutshigher is better
Caleb Thielbar
4040
now 15
5
Mason Montgomery
4040
now 30
6
Winshigher is better
Caleb Thielbar
.0002.80
now 2
01
Mason Montgomery
.0002.80
now 1
00
Saveshigher is better
Caleb Thielbar
.0003.40
now 2
01
Mason Montgomery
.0003.40
now 0
0
If you already own them — trade angle
Hold · wait & seeCaleb Thielbar — hold.conf 0.50
BuyMason Montgomery — buy.conf 0.92
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