MLB Daily DeltaWeek 19 · July 31, 2026
Portrait of Lucas Giolito
Lucas Giolito
SD · P
Change to
Portrait of Nick Martinez
Nick Martinez
TB · 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

Lucas Giolito wins 2 (ERA, W); Nick Martinez wins 2 (K, WHIP); SV n/a.

04

Under the hood

Underlying skill — each value vs league avg
Fastball Velolg 94.0 · higher = better
Lucas Giolito
90.8
Nick Martinez
92.8
Swinging-Strike %lg 11.0% · higher = better
Lucas Giolito
9.8%
Nick Martinez
8.9%
Strikeout %lg 22.0% · higher = better
Lucas Giolito
13.0%
Nick Martinez
14.2%
Chase %lg 28.5% · higher = better
Lucas Giolito
19.0%
Nick Martinez
32.0%
Hard-Hit % Allowedlg 40.0% · lower = better
Lucas Giolito
43.8%
Nick Martinez
31.9%
Barrel % Allowedlg 8.0% · lower = better
Lucas Giolito
4.2%
Nick Martinez
6.8%
xwOBA Allowedlg .315 · lower = better
Lucas Giolito
.357
Nick Martinez
.321
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
Lucas Giolito
26.31
lg xERA 4.10
now 4.97
4.10
Nick Martinez
26.31
lg xERA 4.10
now 1.62
4.26
WHIPlower is better
Lucas Giolito
.9001.99
now 1.74
1.30
Nick Martinez
.9001.99
now 1.11
1.25

Volume · rest of season
Strikeoutshigher is better
Lucas Giolito
4055
now 6
25
Nick Martinez
4055
now 41
31
Winshigher is better
Lucas Giolito
.00010.40
now 2
48
Nick Martinez
.00010.40
now 5
25

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

If you already own them — trade angle
Hold · wait & seeLucas Giolito — hold.conf 0.50
Sell HighNick Martinez — sell high. His value is peaking; good time to trade him.conf 0.95
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