Jun Koo
| Club | Ritterkunst Fechtschule |
| Nationality | United States |
Ratings
| Category | Last competed | Rank (current) | Weighted Rating (current) | Rank (best) | Weighted Rating (best) |
|---|---|---|---|---|---|
| Longsword | |||||
| - Mixed & Men's Steel Longsword | June 2026 | 2476 (top 31%) | 1268.2 | 2429 (June 2026) | 1270.9 (June 2026) |
| Single Rapier | |||||
| - Mixed & Men's Steel Single Rapier | September 2025 | 1503 (top 70%) | 994.8 | 1285 (September 2025) | 1001.6 (September 2025) |
Record
| Division | Total | Win | Loss | Draw | Other |
|---|---|---|---|---|---|
| Mixed Steel Longsword | 12 | 7 | 4 | 1 | 0 |
| Mixed Steel Single Rapier | 4 | 1 | 3 | 0 | 0 |
| Sum | 16 | 8 | 7 | 1 | 0 |
Full rating histories
Mixed & Men's Steel Longsword
September 2025
3901
1076.6
October 2025
3960
1076
November 2025
4050
1075.5
December 2025
4097
1074.9
January 2026
4109
1074.4
February 2026
4163
1073.8
March 2026
4251
1073.3
April 2026
4374
1072.7
May 2026
4541
1072.2
June 2026
2429
1270.9
July 2026
2450
1270
August 2026
2485
1269.1
September 2026
2476
1268.2
Mixed & Men's Steel Single Rapier
September 2025
1285
1001.6
October 2025
1339
1001
November 2025
1366
1000.4
December 2025
1381
999.8
January 2026
1408
999.3
February 2026
1409
998.7
March 2026
1472
998.1
April 2026
1502
997.6
May 2026
1465
997
June 2026
1464
996.4
July 2026
1468
995.9
August 2026
1512
995.3
September 2026
1503
994.8
Match results
Mixed & Men's Steel Longsword - 12 fights
June 2026 - South East Renaissance Fencing Open 2026
South East Renaissance Fencing Open 2026
| Division | Stage | Opponent | Outcome | Opponent rating | Win chance |
|---|---|---|---|---|---|
| Mixed Steel Longsword (Tier C) | Bronze Medal Match | Adrian Zaniesienko | LOSS | 1120.61 | 55% |
| Mixed Steel Longsword (Tier C) | Pools | Will Anderson | DRAW | 565.64 | 69% |
| Mixed Steel Longsword (Tier C) | Pools | Amanda DeWitt | WIN | 624.20 | 70% |
| Mixed Steel Longsword (Tier C) | Pools | Jay Luo | WIN | 1091.91 | 61% |
| Mixed Steel Longsword (Tier C) | Pools | Devin Sangster | WIN | 1029.60 | 58% |
| Mixed Steel Longsword (Tier C) | Semifinals | Colin Glaves | LOSS | 1121.42 | 49% |
| Mixed Steel Longsword (Tier C) | Top 16 | Joshua Palmer | WIN | Unrated | |
| Mixed Steel Longsword (Tier C) | Top 32 | Zach Robinson | WIN | 989.86 | 56% |
| Mixed Steel Longsword (Tier C) | Top 8 | Alec Jackson | WIN | 1101.32 | 52% |
September 2025 - Double Barrel Classic 2025
Double Barrel Classic 2025
| Division | Stage | Opponent | Outcome | Opponent rating | Win chance |
|---|---|---|---|---|---|
| Mixed Steel Longsword | Pool 2 | Sean Lewis | LOSS | 1400.97 | |
| Mixed Steel Longsword | Pool 2 | Micah Webb | WIN | 1118.39 | |
| Mixed Steel Longsword | Pool 2 | Cameron Fulco | LOSS | 1557.03 |
Mixed & Men's Steel Single Rapier - 4 fights
September 2025 - Double Barrel Classic 2025
Double Barrel Classic 2025
| Division | Stage | Opponent | Outcome | Opponent rating | Win chance |
|---|---|---|---|---|---|
| Mixed Steel Single Rapier | Pool 2 | Keith Hamm | LOSS | 1531.09 | |
| Mixed Steel Single Rapier | Pool 2 | Thomas Harding IV | WIN | Unrated | |
| Mixed Steel Single Rapier | Pool 2 | Lawrence Robinson | LOSS | Unrated | |
| Mixed Steel Single Rapier | Rd of 16 | Michael Roth | LOSS | 1327.18 |