Heads up: at least one of these records is a tracked record — the wins and losses Kill The Body has ingested so far, not an independently verified career total. Treat the comparison as a read on the bouts we hold, not a settled ledger.
Brendan O'Callaghan (3-1 across 4 tracked bouts) and Marquis Williams (1-0 across 1 tracked bouts) are compared on record, finishing method, activity, and common opponents on Kill The Body. The two have met once. They share no common opponents in Kill The Body's bout data.
Brendan O'Callaghan vs Marquis Williams — record, stats and common opponents compared
Head to Head
Marquis Williams leads 1–0- Marquis Williams wonPSAC - Feb 15, 2025 - HARRAH'S CASINOFeb 15, 2025 · SD
The Numbers
- 3-1
- Record
- 1-0 (edge)
- 75%
- Win %
- 100% (edge)
- 1 (edge)
- Wins by knockout
- 0
- 33% (edge)
- Stoppage rate (tracked wins)
- 0%
- 0
- Times stopped
- 0
- 0
- Title reigns
- 0
- 3.5
- Bouts per year
- —
- 4
- Bouts tracked
- 1
One or both records are tracked, not career-verified.
Counted from bouts Kill The Body has ingested, not a career total.
Counted from bouts Kill The Body has ingested, not a career total.
Across each fighter's tracked career span.
Tale of the Tape
- 162.00
- Division
- 162.40
How They Win
Tracked bouts onlyBrendan O'Callaghan · 3 wins
KO/TKO
1
Decision
1
Other
1
Marquis Williams · 1 wins
KO/TKO
0
Decision
1
Other
0
Counted from the bouts Kill The Body has ingested for each fighter (4 and 1 respectively), not from a career-complete method table.
Common Opponents
No opponents in common across the bouts Kill The Body has tracked for these two.
Current Form
Brendan O'Callaghan
WWWL
W3 streak · last fought Apr 11, 2026
Marquis Williams
W
W1 streak · last fought Feb 15, 2025
Common Questions
- Have Brendan O'Callaghan and Marquis Williams ever fought each other?
- Yes. Brendan O'Callaghan and Marquis Williams met once on February 15, 2025, and Marquis Williams won by SD.
- Who has the better record, Brendan O'Callaghan or Marquis Williams?
- Brendan O'Callaghan is 3-1 across the 4 bouts Kill The Body has tracked and Marquis Williams is 1-0 across the 1 bouts Kill The Body has tracked. Marquis Williams has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
- Who has more knockouts, Brendan O'Callaghan or Marquis Williams?
- Brendan O'Callaghan has 1 knockout win and Marquis Williams has 0. Brendan O'Callaghan has more.
- Do Brendan O'Callaghan and Marquis Williams have any common opponents?
- Kill The Body's bout data shows no opponents that both Brendan O'Callaghan and Marquis Williams have faced.
- How much fight data does Kill The Body have on Brendan O'Callaghan and Marquis Williams?
- This comparison is drawn from 4 bouts tracked for Brendan O'Callaghan and 1 bout tracked for Marquis Williams. Method and activity splits reflect those bouts only.