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.
Chauncy Welliver (57-13-5) and Sonny Bill Williams (9-3 across 12 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.
Chauncy Welliver vs Sonny Bill Williams — record, stats and common opponents compared
Head to Head
Sonny Bill Williams leads 1–0- Sonny Bill Williams wonWilliams vs WelliverJan 31, 2015 · UD
The Numbers
- 57-13-5 (edge)
- Record
- 9-3
- 79.3% (edge)
- Win %
- 75%
- 23 (edge)
- Wins by knockout
- 4
- 40.35%
- KO rate
- —
- 40%
- Stoppage rate (tracked wins)
- 44% (edge)
- 3
- Times stopped
- 1 (edge)
- 0
- Title reigns
- 0
- 0.7 (edge)
- Bouts per year
- 0.2
- 11
- Bouts tracked
- 12
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
- 6′2″ (188 cm)
- Height
- 6′3″ (191 cm) (edge)
- 43
- Age
- 41
- Orthodox
- Stance
- —
- Heavyweight
- Division
- —
- American New Zealand
- Nationality
- New Zealand
How They Win
Tracked bouts onlyChauncy Welliver · 5 wins
KO/TKO
2
Decision
3
Other
0
Sonny Bill Williams · 9 wins
KO/TKO
4
Decision
5
Other
0
Counted from the bouts Kill The Body has ingested for each fighter (11 and 12 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
Chauncy Welliver
LLLWL
L3 streak · last fought Aug 28, 2020
Sonny Bill Williams
LLWWW
L2 streak · last fought Jul 16, 2025
Common Questions
- Have Chauncy Welliver and Sonny Bill Williams ever fought each other?
- Yes. Chauncy Welliver and Sonny Bill Williams met once on January 31, 2015, and Sonny Bill Williams won by UD.
- Who has the better record, Chauncy Welliver or Sonny Bill Williams?
- Chauncy Welliver is 57-13-5 and Sonny Bill Williams is 9-3 across the 12 bouts Kill The Body has tracked. Chauncy Welliver has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
- Who has more knockouts, Chauncy Welliver or Sonny Bill Williams?
- Chauncy Welliver has 23 knockout wins and Sonny Bill Williams has 4. Chauncy Welliver has more.
- Do Chauncy Welliver and Sonny Bill Williams have any common opponents?
- Kill The Body's bout data shows no opponents that both Chauncy Welliver and Sonny Bill Williams have faced.
- Who is bigger, Chauncy Welliver or Sonny Bill Williams?
- Sonny Bill Williams is the taller fighter at 191 cm, 3 cm above the other.
- How much fight data does Kill The Body have on Chauncy Welliver and Sonny Bill Williams?
- This comparison is drawn from 11 bouts tracked for Chauncy Welliver and 12 bouts tracked for Sonny Bill Williams. Method and activity splits reflect those bouts only.