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.
Callum Simpson (2-1 across 3 tracked bouts) and Zak Chelli (17-3-1) 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.
Callum Simpson vs Zak Chelli — record, stats and common opponents compared
Head to Head
Callum Simpson leads 1–0- Callum Simpson wonChelli vs SimpsonAug 3, 2024 · UD
The Numbers
- 2-1
- Record
- 17-3-1 (edge)
- 66.7%
- Win %
- 83.3% (edge)
- 0
- Wins by knockout
- 9 (edge)
- —
- KO rate
- 52.94%
- 0%
- Stoppage rate (tracked wins)
- 53% (edge)
- 1
- Times stopped
- 0 (edge)
- 0
- Title reigns
- 0
- 1.5
- Bouts per year
- 2.3 (edge)
- 3
- Bouts tracked
- 21
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
- 6′0″ (183 cm)
- —
- Age
- 28
- —
- Stance
- Orthodox
How They Win
Tracked bouts onlyCallum Simpson · 2 wins
KO/TKO
0
Decision
2
Other
0
Zak Chelli · 17 wins
KO/TKO
9
Decision
7
Other
1
Counted from the bouts Kill The Body has ingested for each fighter (3 and 21 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
Callum Simpson
WLW
W1 streak · last fought Aug 8, 2026
Zak Chelli
WWLWW
W2 streak · last fought May 9, 2026
Common Questions
- Have Callum Simpson and Zak Chelli ever fought each other?
- Yes. Callum Simpson and Zak Chelli met once on August 3, 2024, and Callum Simpson won by UD.
- Who has the better record, Callum Simpson or Zak Chelli?
- Callum Simpson is 2-1 across the 3 bouts Kill The Body has tracked and Zak Chelli is 17-3-1. Zak Chelli has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
- Who has more knockouts, Callum Simpson or Zak Chelli?
- Callum Simpson has 0 knockout wins and Zak Chelli has 9. Zak Chelli has more.
- Do Callum Simpson and Zak Chelli have any common opponents?
- Kill The Body's bout data shows no opponents that both Callum Simpson and Zak Chelli have faced.
- How much fight data does Kill The Body have on Callum Simpson and Zak Chelli?
- This comparison is drawn from 3 bouts tracked for Callum Simpson and 21 bouts tracked for Zak Chelli. Method and activity splits reflect those bouts only.