MLB Daily DeltaWeek 27 · September 30, 2026
Portrait of Kai-Wei Teng
Kai-Wei Teng
HOU · P
Change to
Ryan Johnson
LAA · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 1–1, 2 even. Take whoever fills a bigger need.

Head-to-head
K
ERA
▶
◀
WHIP
W
SV n/a

Kai-Wei Teng wins 1 (WHIP); Ryan Johnson wins 1 (ERA); 2 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Kai-Wei Teng
93.3
Ryan Johnson
92.4
Swinging-Strike %lg 11.0% · higher = better
Kai-Wei Teng
11.6%
Ryan Johnson
10.8%
Strikeout %lg 22.0% · higher = better
Kai-Wei Teng
22.2%
Ryan Johnson
18.1%
Chase %lg 28.5% · higher = better
Kai-Wei Teng
28.5%
Ryan Johnson
28.4%
Hard-Hit % Allowedlg 40.0% · lower = better
Kai-Wei Teng
39.0%
Ryan Johnson
35.3%
Barrel % Allowedlg 8.0% · lower = better
Kai-Wei Teng
8.1%
Ryan Johnson
9.4%
xwOBA Allowedlg .315 · lower = better
Kai-Wei Teng
.339
Ryan Johnson
.336
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
28.25
lg xERA 4.10
now 2.57
4.51
Ryan Johnson
28.25
lg xERA 4.10
now 12.83
4.45
WHIPlower is better
Kai-Wei Teng
.9002.55
now 1.10
1.36
Ryan Johnson
.9002.55
now 2.33
1.37

Volume · rest of season
Strikeoutshigher is better
Kai-Wei Teng
4060.20
now 43
0
Ryan Johnson
4060.20
now 7
0
Winshigher is better
Kai-Wei Teng
.0004.20
now 3
0–0
Ryan Johnson
.0004.20
now 0
0–0

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

If you already own them — trade angle
SellKai-Wei Teng — sell.conf 0.81
SellRyan Johnson — sell.conf 0.78
Tweet