MLB Daily DeltaWeek 13 · June 22, 2026
Portrait of Aroldis Chapman
Aroldis Chapman
BOS · P
Change to
Kenley Jansen
DET · P
Change to
Who's more valuable, rest of season

Aroldis Chapman.

He projects to help you in more roto categories the rest of the way — strikeouts and saves.

Head-to-head
K
ERA
WHIP
W
SV

Aroldis Chapman wins 2 categories (K, SV); Kenley Jansen wins 1 (W); 2 even.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Aroldis Chapman
96.7
Kenley Jansen
93.8
Swinging-Strike %lg 11.0% · higher = better
Aroldis Chapman
15.4%
Kenley Jansen
13.3%
Strikeout %lg 22.0% · higher = better
Aroldis Chapman
33.7%
Kenley Jansen
30.1%
Chase %lg 28.5% · higher = better
Aroldis Chapman
32.7%
Kenley Jansen
23.8%
Hard-Hit % Allowedlg 40.0% · lower = better
Aroldis Chapman
42.6%
Kenley Jansen
29.3%
Barrel % Allowedlg 8.0% · lower = better
Aroldis Chapman
10.6%
Kenley Jansen
9.8%
xwOBA Allowedlg .315 · lower = better
Aroldis Chapman
.255
Kenley Jansen
.306
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
Aroldis Chapman
26.53
lg xERA 4.10
now 0.48
3.70
Kenley Jansen
26.53
lg xERA 4.10
now 4.80
3.70
WHIPlower is better
Aroldis Chapman
.9001.39
now 0.86
1.24
Kenley Jansen
.9001.39
now 1.20
1.24

Volume · rest of season
Strikeoutshigher is better
Aroldis Chapman
4054
now 25
44
Kenley Jansen
4054
now 19
38
Winshigher is better
Aroldis Chapman
.0004.20
now 0
00
Kenley Jansen
.0004.20
now 1
13
Saveshigher is better
Aroldis Chapman
.20030.80
now 12
1324
Kenley Jansen
.20030.80
now 7
916
If you already own them — trade angle
Sell HighAroldis Chapman — sell high. His value is peaking; good time to trade him.conf 0.95
Hold · wait & seeKenley Jansen — hold.conf 0.50
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