MLB Daily DeltaWeek 19 · August 4, 2026
Aaron Bummer
KC · P
Change to
Portrait of Justin Sterner
Justin Sterner
ATH · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 00, 4 even. Take whoever fills a bigger need.

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

Aaron Bummer wins 0 (none); Justin Sterner 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
Aaron Bummer
90.5
Justin Sterner
93.5
Swinging-Strike %lg 11.0% · higher = better
Aaron Bummer
9.8%
Justin Sterner
15.6%
Strikeout %lg 22.0% · higher = better
Aaron Bummer
15.5%
Justin Sterner
21.7%
Chase %lg 28.5% · higher = better
Aaron Bummer
27.7%
Justin Sterner
33.9%
Hard-Hit % Allowedlg 40.0% · lower = better
Aaron Bummer
51.7%
Justin Sterner
45.0%
Barrel % Allowedlg 8.0% · lower = better
Aaron Bummer
13.3%
Justin Sterner
9.2%
xwOBA Allowedlg .315 · lower = better
Aaron Bummer
.373
Justin Sterner
.292
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
Aaron Bummer
28.25
lg xERA 4.10
now 8.82
3.70
Justin Sterner
28.25
lg xERA 4.10
now 3.54
3.69
WHIPlower is better
Aaron Bummer
.9002.30
now 1.96
1.24
Justin Sterner
.9002.30
now 1.11
1.24

Volume · rest of season
Strikeoutshigher is better
Aaron Bummer
4031.60
now 13
16
Justin Sterner
4031.60
now 26
16
Winshigher is better
Aaron Bummer
.0002.80
now 1
01
Justin Sterner
.0002.80
now 2
12

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

If you already own them — trade angle
Hold · wait & seeAaron Bummer — hold.conf 0.50
Hold · wait & seeJustin Sterner — hold.conf 0.50
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