Roy Jones Jr is commonly credited with beating 13 world champions in his professional career, though some lists count differently depending on whether they include interim, vacant, or later-title holders. A boxing forum roundup also claimed 18 if you stretch the definition to include several less stringent title cases, which is why you’ll see different numbers online.

Why the number varies

Different sources count his wins differently:

  • Strict count: only recognized world champions.
  • Broad count: includes former champions, interim champions, or fighters who became champions later.
  • Forum counts: often use a looser definition, which can inflate the total.

Best simple answer

If you want the usual shorthand, say 13 world champions. If you want the most generous fan-made count, you’ll see 18 mentioned online.

Context

Roy Jones Jr. is widely regarded as one of boxing’s greats, and his resume is often discussed in terms of how many elite names he beat rather than just the exact count.