Heavyweight MMA
Cain Velasquez vs Jake O'Brien
A fight that actually happened — and everything both records say about it.
Meetings on record
1
Cain Velasquez and Jake O'Brien met once (2008). Cain Velasquez won in 2008 by ko.
SOURCE·Cain Velasquez and Jake O'Brien (fighter) — English Wikipedia (CC BY-SA 4.0)·both records name the other·REVIEWED AUG 2026
How this head-to-head is established
- This pairing exists only because at least one of the two articles' own results tables names the other fighter. No matchup on this site is speculative and none is a hypothetical.
- Every figure in the comparison below comes from that fighter's own page and carries the same source line. A dash means the source states nothing, not that the value is zero.
- Common opponents are found by matching linked bout lists, which is only possible because every fight list here is linked to every other. A shared opponent is not a transitive result and this page does not treat it as one.
- Nothing on this page predicts an outcome. It is a comparison of what is on record.
Side by side
| Cain Velasquez | Jake O'Brien | |
|---|---|---|
| 77″ (195.6 cm) | Reach | — |
| 73″ (185.4 cm) | Height | 75″ (190.5 cm) |
| +5.5% | Reach advantage | — |
| 14–3 | Record | 15–4 |
| 86% | Finish rate | 67% |
| 9 | Longest unbeaten run | 10 |
| 17 | Recorded bouts | 19 |
| — | Stance | — |
A comparison of what is on record. Nothing here predicts a result.
Both records, drawn
The same ledger line on each: wins stamped above the rule, losses below, the mark's shape carrying how it ended.
Cain Velasquez
Jake O'Brien
Cross-references
Where this pairing leads
Cain Velasquez
The full ledger: 17 bouts, the reach placed in its cohort, and what the record does not say.
14–3 Jake O'BrienThe same, from the other corner — 19 bouts and the cohort O'Brien is ranked inside.
15–4 Every confirmed matchupThe other 899 pairings whose own records confirm the fight happened — not a list of fights anyone imagined.
900 BOUTS