MLB Daily DeltaWeek 13 · June 20, 2026
Cionel Pérez
NYM · P
Change to
Portrait of Jake Bird
Jake Bird
NYY · 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

Cionel Pérez wins 1 (W); Jake Bird wins 1 (K); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Cionel Pérez
96.5
Jake Bird
94.0
Swinging-Strike %lg 11.0% · higher = better
Cionel Pérez
9.1%
Jake Bird
12.5%
Strikeout %lg 22.0% · higher = better
Cionel Pérez
16.8%
Jake Bird
25.5%
Chase %lg 28.5% · higher = better
Cionel Pérez
22.9%
Jake Bird
23.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Cionel Pérez
51.9%
Jake Bird
41.3%
Barrel % Allowedlg 8.0% · lower = better
Cionel Pérez
14.3%
Jake Bird
11.1%
xwOBA Allowedlg .315 · lower = better
Cionel Pérez
.391
Jake Bird
.341
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
Cionel Pérez
2.856.67
lg xERA 4.10
now 5.82
3.70
Jake Bird
2.856.67
lg xERA 4.10
now 5.00
3.70
WHIPlower is better
Cionel Pérez
1.101.73
now 1.59
1.24
Jake Bird
1.101.73
now 1.33
1.24

Volume · rest of season
Strikeoutshigher is better
Cionel Pérez
4036.60
now 10
20
Jake Bird
4036.60
now 20
29
Winshigher is better
Cionel Pérez
.0006.60
now 2
25
Jake Bird
.0006.60
now 1
12

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

If you already own them — trade angle
Sell HighCionel Pérez — sell high. His value is peaking; good time to trade him.conf 0.95
Hold · wait & seeJake Bird — hold.conf 0.55
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