MLB Daily DeltaWeek 17 · July 21, 2026
Portrait of John King
John King
MIA · P
Change to
Portrait of Tim Mayza
Tim Mayza
PHI · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 11, 3 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
WHIP
W
SV

John King wins 1 (SV); Tim Mayza wins 1 (K); 3 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
John King
90.5
Tim Mayza
95.0
Swinging-Strike %lg 11.0% · higher = better
John King
11.3%
Tim Mayza
10.7%
Strikeout %lg 22.0% · higher = better
John King
20.1%
Tim Mayza
24.6%
Chase %lg 28.5% · higher = better
John King
34.4%
Tim Mayza
28.3%
Hard-Hit % Allowedlg 40.0% · lower = better
John King
36.2%
Tim Mayza
45.2%
Barrel % Allowedlg 8.0% · lower = better
John King
8.6%
Tim Mayza
7.3%
xwOBA Allowedlg .315 · lower = better
John King
.283
Tim Mayza
.286
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
John King
2.064.14
lg xERA 4.10
now 2.52
3.68
Tim Mayza
2.064.14
lg xERA 4.10
now 3.62
3.68
WHIPlower is better
John King
.9001.45
now 0.72
1.24
Tim Mayza
.9001.45
now 0.99
1.24

Volume · rest of season
Strikeoutshigher is better
John King
4031.60
now 20
14
Tim Mayza
4031.60
now 26
21
Winshigher is better
John King
.0001.48
now 1
01
Tim Mayza
.0001.48
now 1
01
Saveshigher is better
John King
.0002.40
now 1
01
Tim Mayza
.0002.40
now 0
0
If you already own them — trade angle
Sell HighJohn King — sell high. His value is peaking; good time to trade him.conf 0.88
Hold · wait & seeTim Mayza — hold.conf 0.50
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