MLB Daily DeltaWeek 13 · June 19, 2026
Portrait of Kai-Wei Teng
Kai-Wei Teng
HOU · P
Change to
Portrait of Wandy Peralta
Wandy Peralta
SD · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 22. Take whoever fills a bigger need.

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

Kai-Wei Teng wins 2 (K, W); Wandy Peralta wins 2 (ERA, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Kai-Wei Teng
93.8
Wandy Peralta
96.3
Swinging-Strike %lg 11.0% · higher = better
Kai-Wei Teng
11.6%
Wandy Peralta
11.8%
Strikeout %lg 22.0% · higher = better
Kai-Wei Teng
24.7%
Wandy Peralta
16.3%
Chase %lg 28.5% · higher = better
Kai-Wei Teng
28.3%
Wandy Peralta
29.5%
Hard-Hit % Allowedlg 40.0% · lower = better
Kai-Wei Teng
40.7%
Wandy Peralta
34.6%
Barrel % Allowedlg 8.0% · lower = better
Kai-Wei Teng
6.9%
Wandy Peralta
3.8%
xwOBA Allowedlg .315 · lower = better
Kai-Wei Teng
.327
Wandy Peralta
.324
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
Kai-Wei Teng
24.80
lg xERA 4.10
now 2.57
4.16
Wandy Peralta
24.80
lg xERA 4.10
now 2.73
3.74
WHIPlower is better
Kai-Wei Teng
.9601.58
now 1.10
1.35
Wandy Peralta
.9601.58
now 1.44
1.26

Volume · rest of season
Strikeoutshigher is better
Kai-Wei Teng
4062.40
now 43
50
Wandy Peralta
4062.40
now 19
27
Winshigher is better
Kai-Wei Teng
.0007
now 3
25
Wandy Peralta
.0007
now 0
00

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

If you already own them — trade angle
SellKai-Wei Teng — sell.conf 0.64
Hold · wait & seeWandy Peralta — hold.conf 0.50
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