The Official Calendar
Rewatch history
The dedicated UFC portal for rosters, records, and every fight card we track. Curated intelligence, live data snapshots, and decades of fight history.
Access complete fight records, striking accuracy, and grappling stats for every active fighter on the roster.
"Irish"
How they get it done
UFC career · 2 of 7 bouts
UFC career · 2 of 7 bouts
Performance across last 7 fights
7 Professional Bouts
Jake O'Brien
Jake "Irish" O'Brien is a heavyweight competing in the UFC with an overall record of 15-4-0. Across seven tracked UFC bouts, O'Brien has shown a modest striking output alongside a meaningful takedown presence, having landed 12 takedowns in that span — a ratio that suggests he leans on grappling as a primary tool rather than pure striking.
O'Brien's recent UFC run has been uneven. He was stopped by Cain Velasquez via KO/TKO at UFC: Silva vs Irvin in July 2008, then rebounded with a decision win over Christian Wellisch at UFC 94 in January 2009. That momentum was halted when Jon Jones submitted him at UFC 100 in July 2009. The 32 significant strikes he has landed across his seven UFC appearances reflect a fighter whose offensive output on the feet has been limited, making his takedown game the more consistent weapon in his arsenal.
Get alerts when Jake O'Brien fights next
Free fight-night reminders + our top AI picks before every card.
