MLB Daily DeltaWeek 13 · June 20, 2026
Portrait of Mason Montgomery
Mason Montgomery
PIT · P
Change to
Portrait of Shawn Armstrong
Shawn Armstrong
CLE · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 11, 2 even. Take whoever fills a bigger need.

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

Mason Montgomery wins 1 (K); Shawn Armstrong wins 1 (W); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Mason Montgomery
98.1
Shawn Armstrong
93.4
Swinging-Strike %lg 11.0% · higher = better
Mason Montgomery
14.6%
Shawn Armstrong
14.1%
Strikeout %lg 22.0% · higher = better
Mason Montgomery
29.5%
Shawn Armstrong
27.2%
Chase %lg 28.5% · higher = better
Mason Montgomery
30.7%
Shawn Armstrong
26.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Mason Montgomery
43.7%
Shawn Armstrong
41.7%
Barrel % Allowedlg 8.0% · lower = better
Mason Montgomery
8.5%
Shawn Armstrong
8.3%
xwOBA Allowedlg .315 · lower = better
Mason Montgomery
.310
Shawn Armstrong
.307
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
Mason Montgomery
3.384.13
lg xERA 4.10
now 3.91
3.71
Shawn Armstrong
3.384.13
lg xERA 4.10
now 3.60
3.70
WHIPlower is better
Mason Montgomery
1.171.40
now 1.26
1.24
Shawn Armstrong
1.171.40
now 1.33
1.24

Volume · rest of season
Strikeoutshigher is better
Mason Montgomery
4054
now 30
44
Shawn Armstrong
4054
now 19
33
Winshigher is better
Mason Montgomery
.2003.80
now 1
12
Shawn Armstrong
.2003.80
now 1
13

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

If you already own them — trade angle
Hold · wait & seeMason Montgomery — hold.conf 0.50
Sell HighShawn Armstrong — sell high. His value is peaking; good time to trade him.conf 0.82
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