Sean O'Sullivan Cards
The complete Sean O'Sullivan checklist: 11 cards — cards spanning 2008–2015, 3 rookie cards, 2 autographs.
Data updated June 21, 2026.
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baseball
2015
Topps Update 20151 card
2011
Topps Update 20111 card
2010
Upper Deck 20101 card
2009
2008
Frequently Asked Questions about Sean O'Sullivan Cards
Does Sean O'Sullivan have a rookie card?
Yes. The AgentGrail catalog includes 3 Sean O'Sullivan rookie cards across multiple years and sets. Rookie cards are among the most sought-after Baseball cards for collectors and investors.
What years were Sean O'Sullivan cards made?
The AgentGrail catalog includes Sean O'Sullivan cards from 2008 through 2015, totaling 11 cards across all sets and brands. The earliest cards date from 2008 and the most recent are from 2015.
Are there Sean O'Sullivan autograph cards?
Yes. The catalog includes 2 Sean O'Sullivan autograph cards. Autographed cards are typically the most valuable Sean O'Sullivan cards in a set and can command significant premiums in graded condition.
What sets include Sean O'Sullivan cards?
Sean O'Sullivan cards appear in numerous sets, including Topps Update, Upper Deck, SP Authentic, and 2 more. The full checklist on this page lists every set in the AgentGrail catalog.
Where can I buy Sean O'Sullivan cards?
eBay is the largest marketplace for Sean O'Sullivan baseball cards, offering both raw and graded (PSA, BGS, SGC) copies. Use the "Find on eBay" buttons on this page to search current listings. For investment-grade copies, look for PSA 10 certified cards.
Answers are grounded in AgentGrail catalog data and recent eBay market comps.
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Compiled by the AgentGrail team · Data refreshed June 21, 2026