B.J. Penn vs Dennis Siver
Head-to-head comparison — tale of the tape, career analysis, stylistic breakdown, and prediction factors

B.J. Penn
16-14-2Dennis Siver
23-11-0Physical Comparison
B.J. Penn stands 175cm tall compared to Dennis Siver's 170cm — a 5cm height advantage that could allow Penn to control range and use the jab effectively.
Record & Experience
B.J. Penn brings a record of 16-14-2 across 32 professional bouts (50% win rate).Dennis Siver enters with 23-11-0 from 34 fights (68% win rate).
Dennis Siver has the experience edge with 34 bouts compared to 32 — that's 2 more fights under the bright lights, which can matter in championship rounds when fatigue sets in and composure is tested.
In terms of finishing power, B.J. Penn is the more prolific finisher with a 44% stoppage rate compared to 22% for Dennis Siver. Penn has shown the ability to end fights decisively.
Age & Career Stage
Both fighters are 47 years old — this is a matchup between contemporaries at the same point in their careers.
Key Factors
Penn's Path to Victory
- • Use height and reach to control distance
- • Establish rhythm early and dictate the pace
Siver's Path to Victory
- • Higher win percentage (68% vs 50%)
- • Greater professional experience (34 bouts)
- • Apply pressure and force the fight on their terms
B.J. Penn vs Dennis Siver — FAQ
- What are B.J. Penn's and Dennis Siver's records?
- B.J. Penn is 16-14-2 (7 KOs). Dennis Siver is 23-11-0 (5 KOs).
- Who is taller — B.J. Penn or Dennis Siver?
- B.J. Penn is taller at 175cm vs 170cm — a 5cm advantage.
- Who has the higher knockout rate?
- B.J. Penn has the higher KO rate at 44% compared to Dennis Siver's 22%.