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.
Jason Whateley (10-1 across 11 tracked bouts) and Mateusz Masternak (50-7) 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.
Jason Whateley vs Mateusz Masternak — record, stats and common opponents compared
Head to Head
Mateusz Masternak leads 1–0- Mateusz Masternak wonMasternak vs WhateleyOct 29, 2022 · UD
The Numbers
- 10-1 (edge)
- Record
- 50-7
- 90.9% (edge)
- Win %
- 87.7%
- 9
- Wins by knockout
- 33 (edge)
- —
- KO rate
- 66%
- 90% (edge)
- Stoppage rate (tracked wins)
- 66%
- 0 (edge)
- Times stopped
- 2
- 0
- Title reigns
- 0
- 2.7
- Bouts per year
- 2.9 (edge)
- 11
- Bouts tracked
- 57
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
- 35
- Age
- 39
- —
- Stance
- Orthodox
- —
- Division
- Cruiserweight
- Australian
- Nationality
- Polish
How They Win
Tracked bouts onlyJason Whateley · 10 wins
KO/TKO
9
Decision
1
Other
0
Mateusz Masternak · 50 wins
KO/TKO
33
Decision
17
Other
0
Counted from the bouts Kill The Body has ingested for each fighter (11 and 57 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
Jason Whateley
LWWWW
L1 streak · last fought Oct 29, 2022
Mateusz Masternak
LWWWL
L1 streak · last fought Apr 4, 2026
Common Questions
- Have Jason Whateley and Mateusz Masternak ever fought each other?
- Yes. Jason Whateley and Mateusz Masternak met once on October 29, 2022, and Mateusz Masternak won by UD.
- Who has the better record, Jason Whateley or Mateusz Masternak?
- Jason Whateley is 10-1 across the 11 bouts Kill The Body has tracked and Mateusz Masternak is 50-7. Jason Whateley has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
- Who has more knockouts, Jason Whateley or Mateusz Masternak?
- Jason Whateley has 9 knockout wins and Mateusz Masternak has 33. Mateusz Masternak has more.
- Do Jason Whateley and Mateusz Masternak have any common opponents?
- Kill The Body's bout data shows no opponents that both Jason Whateley and Mateusz Masternak have faced.
- How much fight data does Kill The Body have on Jason Whateley and Mateusz Masternak?
- This comparison is drawn from 11 bouts tracked for Jason Whateley and 57 bouts tracked for Mateusz Masternak. Method and activity splits reflect those bouts only.