MLBTSDB

Should you buy this?

To use

Worth the stubs for your squad

Not enough data

To flip

Buy low, sell higher, after tax

Not enough data

To hold

Hot in real life, may get upgraded

Not enough data

For exchanges

Cheapest way to feed an exchange

Not enough data

Where this card ranks

  • 463rd best of 924 relievers

Starting pitchers are ranked against starters, relievers against relievers, the way the team builder picks a staff.

Price history

Holding steady, with no big price moves lately.

What it costs to buyWhat you'd get selling
202224Oct 11Oct 17Oct 23Oct 2922
Price history

Ratings

Stamina
25
K/9
49
H/9
72
BB/9
38
Velocity
90
Control
57
Break
94

Your ratings

How this card ranks under ratings built for specific jobs. Make one that weighs what you care about, and every card page shows where that card lands.

Build your own rating

Pitching

Stamina
25
Pitching clutch
69
H/9
72
K/9
49
BB/9
38
HR/9
71
Velocity
90
Control
57
Break
94

Pitches

4-Seam Fastball
97 mph
Circle Change
87 mph
Slider
86 mph

Player

Position
RP
Bats
R
Throws
R
Age
28
Height
6'5"
Weight
200 lbs
Born
North Carolina
Number
37

Fielding & running

Fielding
45
Arm strength
70
Arm accuracy
50
Blocking
0
Speed
45
Baserunning
43
Reaction
30

Real-world tendencies

Arm slot
Three-quarter 40°

A common release point among MLB pitchers (2025 Statcast)

SubmarineSidearmLow three-quarterThree-quarterHigh three-quarterOver the top

Faint lines: all 740 pitchers in this edition who throw with the same hand.

Obtained from

Captains that boost this card

Build around one of these and this card gets their ability boost.

More Mariners at RP

Questions

How do you get Jackson Kowar?
Buy it on the Community Market, where it costs about 22 stubs right now. It comes from: Daily Login Reward and The Show Pack.
How much is Jackson Kowar worth?
It costs about 22 stubs to buy right now.

Similar cards

Same position, comparable ratings

64
Bryce JarvisRP · ARI21

5% cheaper

66
Kyle NicolasRP · PIT56

155% more

55% cheaper

395% more

55% cheaper

74
Reed GarrettRP · NYM55

150% more

Keep browsing