Sean O’Brien

@Buckeyeflipper

643
Items

Rookie Seller

Rookie Buyer

Stacks

My Rookies

12 cards

My Rookies

12 cards

My Rookies

12 cards

My Rookies

12 cards

My Rookies

12 cards

Zack Gelof

2024 Bowman - Chrome Mojo Refractors

#14 Zack Gelof

$1.45

Tyler Black

2024 Topps Update - 1989 Topps Baseball 35th Anniversary

#89US-11 Tyler Black

$0.33

Joey Loperfido

2024 Topps Update - Gold

#US65 Joey Loperfido

$1.25

Brock Porter

2024 Donruss

#151 Brock Porter

$0.80

Fernando Tatis Jr.

2026 Topps - Titans of the Game

#TOG-19 Fernando Tatis Jr.

$1.00

Alex Freeland

2026 Topps - 1991 Topps Baseball 35th Anniversary (Series One)

#T91-35 Alex Freeland

$1.25

Kyle Teel

2026 Topps - Stars of MLB

#SMLB-28 Kyle Teel

$1.00

Corbin Carroll

2025 Topps - Stars of MLB

#SMLB-15 Corbin Carroll

$0.99

Brayan Bello

2026 Topps - Spring Training

#177 Brayan Bello

$1.00

Jakob Marsee

2026 Topps

#37 Jakob Marsee

$1.11

Jacob Misiorowski

2026 Topps

#10 Jacob Misiorowski

$1.55

Yordan Alvarez

2026 Topps - Stars of MLB

#SMLB-8 Yordan Alvarez

$1.00

Brady Singer

2026 Topps - Spring Training

#282 Brady Singer

$1.89

Gunnar Henderson

Stars of MLB

#sml11 Gunnar Henderson

$1.00

Chase Burns

2026 Topps - Big Ticket Players

#BTP-24 Chase Burns

$1.40

Samuel Basallo

2026 Topps - Titans of the Game

#TOG-10 Samuel Basallo

$0.99

Kenedy Corona

2026 Topps

#145 Kenedy Corona

$1.20

Oneil Cruz

2026 Topps

#246 Oneil Cruz

$0.49

Warming Bernabel

2026 Topps

#55 Warming Bernabel

$0.49

Kyle Backhus

2026 Topps

#21 Kyle Backhus

$1.00

Bob Seymour

2026 Topps

#70 Bob Seymour

$1.40

Kyle Karros

2026 Topps

#334 Kyle Karros

$1.00

Roki Sasaki

2026 Topps

#66 Roki Sasaki

$2.00

National League Leaders ERA (Paul Skenes / Yoshinobu Yamamoto / Cristopher Sánchez)

2026 Topps

#203 National League Leaders ERA (Paul Skenes / Yoshinobu Yamamoto / Cristopher Sánchez)

$1.00