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.
Jan Marsalek (0-2 across 2 tracked bouts) and Pierce O'Leary (19-1) 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.
Jan Marsalek vs Pierce O'Leary — record, stats and common opponents compared
Head to Head
Pierce O'Leary leads 1–0- Pierce O'Leary wonO'Leary vs MarsalekJun 25, 2021 · TKO · R2
The Numbers
- 0-2
- Record
- 19-1 (edge)
- 0%
- Win %
- 95% (edge)
- 0
- Wins by knockout
- 11 (edge)
- —
- KO rate
- 57.89%
- —
- Stoppage rate (tracked wins)
- 58%
- 2
- Times stopped
- 1 (edge)
- 0
- Title reigns
- 0
- 0.9
- Bouts per year
- 2.9 (edge)
- 2
- Bouts tracked
- 20
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
- —
- Height
- 5′8″ (173 cm)
- —
- Age
- 26
- —
- Stance
- Orthodox
- —
- Nationality
- Irish
How They Win
Tracked bouts onlyJan Marsalek · 0 wins
No tracked wins yet.
Pierce O'Leary · 19 wins
KO/TKO
11
Decision
8
Other
0
Counted from the bouts Kill The Body has ingested for each fighter (2 and 20 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
Jan Marsalek
LL
L2 streak · last fought Jun 25, 2021
Pierce O'Leary
LWWWW
L1 streak · last fought Aug 1, 2026
Common Questions
- Have Jan Marsalek and Pierce O'Leary ever fought each other?
- Yes. Jan Marsalek and Pierce O'Leary met once on June 25, 2021, and Pierce O'Leary won by TKO in round 2.
- Who has the better record, Jan Marsalek or Pierce O'Leary?
- Jan Marsalek is 0-2 across the 2 bouts Kill The Body has tracked and Pierce O'Leary is 19-1. Pierce O'Leary has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
- Who has more knockouts, Jan Marsalek or Pierce O'Leary?
- Jan Marsalek has 0 knockout wins and Pierce O'Leary has 11. Pierce O'Leary has more.
- Do Jan Marsalek and Pierce O'Leary have any common opponents?
- Kill The Body's bout data shows no opponents that both Jan Marsalek and Pierce O'Leary have faced.
- How much fight data does Kill The Body have on Jan Marsalek and Pierce O'Leary?
- This comparison is drawn from 2 bouts tracked for Jan Marsalek and 20 bouts tracked for Pierce O'Leary. Method and activity splits reflect those bouts only.