MLB Daily DeltaWeek 18 · July 29, 2026
Portrait of Alex Lange
Alex Lange
KC · P
Change to
Isaac Mattson
PIT · P
Change to
Who's more valuable, rest of season

Isaac Mattson.

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

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

Isaac Mattson wins 2 categories (ERA, WHIP); Alex Lange wins 1 (K); 1 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Alex Lange
95.9
Isaac Mattson
94.1
Swinging-Strike %lg 11.0% · higher = better
Alex Lange
12.4%
Isaac Mattson
10.5%
Strikeout %lg 22.0% · higher = better
Alex Lange
22.9%
Isaac Mattson
20.4%
Chase %lg 28.5% · higher = better
Alex Lange
29.4%
Isaac Mattson
26.3%
Hard-Hit % Allowedlg 40.0% · lower = better
Alex Lange
41.9%
Isaac Mattson
48.5%
Barrel % Allowedlg 8.0% · lower = better
Alex Lange
12.0%
Isaac Mattson
11.9%
xwOBA Allowedlg .315 · lower = better
Alex Lange
.338
Isaac Mattson
.373
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
Alex Lange
3.384.82
lg xERA 4.10
now 4.50
3.77
Isaac Mattson
3.384.82
lg xERA 4.10
now 4.12
3.70
WHIPlower is better
Alex Lange
1.151.56
now 1.35
1.26
Isaac Mattson
1.151.56
now 1.47
1.24

Volume · rest of season
Strikeoutshigher is better
Alex Lange
4031.60
now 26
20
Isaac Mattson
4031.60
now 15
13
Winshigher is better
Alex Lange
.000.480
now 0
00
Isaac Mattson
.000.480
now 0
00

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

If you already own them — trade angle
Hold · wait & seeAlex Lange — hold.conf 0.55
Hold · wait & seeIsaac Mattson — hold.conf 0.50
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