Boxers / Jonas Sylvain / Boxerbook rating

Jonas Sylvain: Boxerbook rating

Jonas Sylvain has a Boxerbook rating of 1413 ± 287 from 1 counted bouts, as of Oct 20, 2026. Not in a division list yet: 1 counted bout, a list needs 5.

Rating1413 ± 287
PlaceMiddleweight, not listed
Counted bouts1
Unknown opponents0 of 1
Schedule, career1787
Schedule, 36 months1787
Form, last 50.0 of 3.5
Data confidence0%
Statusactive · last bout Jun 19, 2026

Rating over time

high 1413 · low 1413Jun 2026Oct 2026

μ at the end of each month with a bout, and of every month while active. Red dot: latest.

Bouts behind the rating

Every counted bout, newest first: the change in μ it caused (green up, red down), its weight and the rating after it. Unknown opponents: 0 of 1 bouts.

L
Amir Anderson
For vacant WBC US Silver middleweight title
Jun 19, 2026 · UD 10/10 · weight ×1.10 · opponent 1787
−87
→ 1413

Publishers and Boxerbook

Consensus: not in the publishers’ top 15 in Middleweight (a list without them counts as 16).

WBC
not in top 15
WBA
not in top 15
IBF
not in top 15
WBO
not in top 15
Ring
not in top 15
TBRB
not in top 15
Boxerbook
not listed

How the Boxerbook rating works · Jonas Sylvain: record and titles