Welterweight boxing · 1920s
Young Jack O'Brien
60–22
Young Jack O'Brien finished 10% of 60 wins inside the distance — the 3rd percentile for welterweight boxing, where the median is 54%. No reach is on record, so this page compares record rather than measurements.
What is on record
| Reach | not recorded | |
|---|---|---|
| Height | 69″ (175.3 cm) | |
| Stance | Orthodox | |
| Division | Welterweight Boxing | |
| Peak era | 1920s | |
| Country | United States |
Wikipedia carries no reach figure for Young Jack O'Brien, so the reach-advantage comparison this site is built on cannot be computed. Everything below comes from the record instead.
Record
Boxing record
60–22
101 bouts on record
Finish rate
10%
of wins ended inside the distance — welterweight boxing median 54%, 3rd percentile
How this is worked out
- Measurements and records are read from the fighter's English Wikipedia infobox; the fight list is parsed from the article's own results table.
- Reach advantage is (reach − height) ÷ height as a percentage, so fighters of different sizes compare directly.
- Percentiles rank this fighter among the 292 welterweight boxing fighters in the dataset — chosen because it is the most specific group of at least 30 that this fighter belongs to.
Reach advantage = (reach − height) ÷ height × 100
Source: Young Jack O'Brien on English Wikipedia (CC BY-SA 4.0), as of 2026-07-25. Percentiles and derived figures computed here.