College player coverage. Explore dated rosters and player details for 266 FBS and FCS programs. Every saved roster entry has a dated summary. Selected profiles include additional official-source background. Coverage varies by school; coaching backgrounds, program history and FAQs are still being expanded. Please check source dates and confirm changes with the schools. Division II, Division III and NAIA directories are not yet included.
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Casey O'Sullivan appears in Columbia's 2026 roster snapshot retrieved 2026-10-02. Position: TE; Jersey: 88; Listed class: Jr.; Height: 6 ft 4 in; Weight: 240 lb; Hometown: Madison, NJ; School/prep entry (as listed): Seton Hall Prep. This is a summary of supplied roster fields, not an individually researched biography. Confirm current information with the school.
Casey O'Sullivan earned four varsity football letters at Seton Hall Prep in New Jersey. Columbia’s biography lists first-team United Red Super Football Conference and first-team Essex County recognition. The official profile uses a typographic apostrophe in his surname; the saved name and canonical URL retain their original spelling.
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