MLB Daily DeltaWeek 27 · September 27, 2026
Kenley Jansen
DET · P
Change to
Portrait of Kirby Yates
Kirby Yates
PIT · P
Change to
Who's more valuable, rest of season

Too close to call.

They split your categories 0–0, 4 even. Take whoever fills a bigger need.

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

Kenley Jansen wins 0 (none); Kirby Yates wins 0 (none); 4 even; SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Kenley Jansen
93.9
Kirby Yates
90.8
Swinging-Strike %lg 11.0% · higher = better
Kenley Jansen
13.0%
Kirby Yates
14.9%
Strikeout %lg 22.0% · higher = better
Kenley Jansen
28.3%
Kirby Yates
27.9%
Chase %lg 28.5% · higher = better
Kenley Jansen
30.1%
Kirby Yates
35.2%
Hard-Hit % Allowedlg 40.0% · lower = better
Kenley Jansen
38.1%
Kirby Yates
46.6%
Barrel % Allowedlg 8.0% · lower = better
Kenley Jansen
9.5%
Kirby Yates
5.8%
xwOBA Allowedlg .315 · lower = better
Kenley Jansen
.293
Kirby Yates
.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
Kenley Jansen
3.265.24
lg xERA 4.10
now 4.80
3.70
Kirby Yates
3.265.24
lg xERA 4.10
now 4.32
3.70
WHIPlower is better
Kenley Jansen
1.131.31
now 1.20
1.24
Kirby Yates
1.131.31
now 1.20
1.24

Volume · rest of season
Strikeoutshigher is better
Kenley Jansen
4026.60
now 19
0
Kirby Yates
4026.60
now 10
0
Winshigher is better
Kenley Jansen
.0001.48
now 1
0–0
Kirby Yates
.0001.48
now 0
0–0

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

If you already own them — trade angle
Sell HighKenley Jansen — sell high. His value is peaking; good time to trade him.conf 0.71
Hold · wait & seeKirby Yates — hold.conf 0.50
Tweet