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Prospects
KM

Keyner Martinez

San Francisco GiantsSan Francisco Giants
RHP
Age 22 (born Aug 16, 2004)
Value
Perf+
Raw
PSA 10

Keyner Martinez Bowman Card Prices & Value

Track Bowman 1st Chrome autograph and rookie card values for this 22-year-old SF RHP — raw and PSA 10 graded price trends, recent sales, and market data. Current season: ERA 5.42, WHIP 1.41.

Bowman 1st
2026 Bowman Chrome #CPA-KMA
HM:
Community:-

Scouting Grades 20-80 scale

Overall 45Jun 13
FB
60
SL
60
CH
45
CTL
50
A
5.42
ERA
1.41
WHIP
114
K
78.0
IP
3-5
W-L
19
GP
0
SV
44
BB
Market Data

Unlock price charts, recent sales, active listings, and parallel pricing

Keyner Martinez: Common Questions

Does Keyner Martinez have a 1st Bowman autograph, and which set is it in?

Yes. Keyner Martinez's first Bowman autograph is in 2026 Bowman Chrome, card CPA-KMA. Until an MLB debut, that 1st auto is the closest thing to a Keyner Martinez rookie card.

What are Keyner Martinez's position, team, and age?

Keyner Martinez is a RHP in the SF organization, currently 22 years old. This season's line: ERA 5.42, WHIP 1.41.

How is Keyner Martinez ranked among MLB prospects?

Keyner Martinez is not currently inside our ranked prospect list.

What is Keyner Martinez's 1st Bowman auto worth, and where can I track the price?

Raw and PSA 10 sale prices, price history, and the HobbyMonitor value score for Keyner Martinez update daily on this page for HobbyMonitor members.