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.
Sergey Kovalev (36-5-1) and William Johnson (0-10 across 10 tracked bouts) are compared on record, finishing method, activity, and common opponents on Kill The Body. The two have met once. They share 1 common opponent.
Sergey Kovalev vs William Johnson — record, stats and common opponents compared
Head to Head
Sergey Kovalev leads 1–0- Sergey Kovalev wonKovalev vs JohnsonMar 12, 2011 · TKO · R2
The Numbers
- 36-5-1 (edge)
- Record
- 0-10
- 86.9% (edge)
- Win %
- 0%
- 30 (edge)
- Wins by knockout
- 0
- 83.33%
- KO rate
- —
- 83%
- Stoppage rate (tracked wins)
- —
- 3 (edge)
- Times stopped
- 7
- 5 (edge)
- Title reigns
- 0
- 2.7 (edge)
- Bouts per year
- 0.9
- 42
- Bouts tracked
- 10
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′0″ (183 cm)
- Height
- —
- 72″ (184 cm)
- Reach
- —
- 43
- Age
- —
- Orthodox
- Stance
- —
- Russian
- Nationality
- —
How They Win
Tracked bouts onlySergey Kovalev · 36 wins
KO/TKO
30
Decision
6
Other
0
William Johnson · 0 wins
No tracked wins yet.
Counted from the bouts Kill The Body has ingested for each fighter (42 and 10 respectively), not from a career-complete method table.
Common Opponents
1 sharedShared opponents are matched on fighter identity, not on name — two different fighters with the same name never merge into one row.
Current Form
Sergey Kovalev
WLWLW
W1 streak · last fought Apr 18, 2025
William Johnson
LLLLL
L10 streak · last fought Mar 26, 2016
Common Questions
- Have Sergey Kovalev and William Johnson ever fought each other?
- Yes. Sergey Kovalev and William Johnson met once on March 12, 2011, and Sergey Kovalev won by TKO in round 2.
- Who has the better record, Sergey Kovalev or William Johnson?
- Sergey Kovalev is 36-5-1 and William Johnson is 0-10 across the 10 bouts Kill The Body has tracked. Sergey Kovalev has the higher win percentage. Records shown as tracked have not yet been independently verified as complete career totals.
- Who has more knockouts, Sergey Kovalev or William Johnson?
- Sergey Kovalev has 30 knockout wins and William Johnson has 0. Sergey Kovalev has more.
- Do Sergey Kovalev and William Johnson have any common opponents?
- Sergey Kovalev and William Johnson share 1 common opponent: Darnell Boone. Sergey Kovalev fared better against 1 of them.
- How much fight data does Kill The Body have on Sergey Kovalev and William Johnson?
- This comparison is drawn from 42 bouts tracked for Sergey Kovalev and 10 bouts tracked for William Johnson. Method and activity splits reflect those bouts only.