MLB Daily DeltaWeek 15 · July 7, 2026
Portrait of Kirby Yates
Kirby Yates
LAA · P
Change to
Portrait of Michael Petersen
Michael Petersen
MIA · P
Change to
Who's more valuable, rest of season

Kirby Yates.

He projects to help you in more roto categories the rest of the way — strikeouts and saves. Michael Petersen’s box score looks better right now, but it’s built on luck that won’t hold.

Head-to-head
K
ERA
WHIP
W
SV

Kirby Yates wins 2 categories (K, SV); Michael Petersen wins 1 (W); 2 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Kirby Yates
90.6
Michael Petersen
97.6
Swinging-Strike %lg 11.0% · higher = better
Kirby Yates
19.0%
Michael Petersen
14.2%
Strikeout %lg 22.0% · higher = better
Kirby Yates
35.4%
Michael Petersen
30.3%
Chase %lg 28.5% · higher = better
Kirby Yates
37.8%
Michael Petersen
31.1%
Hard-Hit % Allowedlg 40.0% · lower = better
Kirby Yates
50.0%
Michael Petersen
47.2%
Barrel % Allowedlg 8.0% · lower = better
Kirby Yates
9.5%
Michael Petersen
12.4%
xwOBA Allowedlg .315 · lower = better
Kirby Yates
.271
Michael Petersen
.293
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
Kirby Yates
3.354.60
lg xERA 4.10
now 4.32
3.70
Michael Petersen
3.354.60
lg xERA 4.10
now 3.63
3.70
WHIPlower is better
Kirby Yates
1.051.31
now 1.20
1.24
Michael Petersen
1.051.31
now 1.12
1.24

Volume · rest of season
Strikeoutshigher is better
Kirby Yates
4028.60
now 10
23
Michael Petersen
4028.60
now 23
21
Winshigher is better
Kirby Yates
.0002.80
now 0
00
Michael Petersen
.0002.80
now 1
12
Saveshigher is better
Kirby Yates
.0005.60
now 1
14
Michael Petersen
.0005.60
now 1
02
If you already own them — trade angle
Hold · wait & seeKirby Yates — hold.conf 0.50
Sell HighMichael Petersen — sell high. His value is peaking; good time to trade him.conf 0.73
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