Isaac Kosterman
| Club | Zornhau Alaska |
| Nationality | United States |
Ratings
| Category | Last competed | Rank (current) | Weighted Rating (current) | Rank (best) | Weighted Rating (best) |
|---|---|---|---|---|---|
| Longsword | |||||
| - Mixed & Men's Steel Longsword | January 2026 | 5554 (top 68% of island) | 994.5 | 4802 (January 2026) | 999.1 (January 2026) |
| Sabre | |||||
| - Mixed & Men's Steel Sabre | January 2026 | 1700 (top 47% of island) | 1151.9 | 1384 (January 2026) | 1157.6 (January 2026) |
Record
| Division | Total | Win | Loss | Draw | Other |
|---|---|---|---|---|---|
| Mixed Steel Sabre | 7 | 3 | 3 | 1 | 0 |
| Mixed Steel Longsword | 4 | 1 | 2 | 1 | 0 |
| Sum | 11 | 4 | 5 | 2 | 0 |
Full rating histories
Mixed & Men's Steel Longsword
The fighter has been on an island, I.E. has no direct link to most fighters, in 10 out of 10 months
January 2026
4802
999.1
0
February 2026
4864
998.6
1
-0.5
March 2026
4971
998.1
2
-0.5
April 2026
5128
997.6
3
-0.5
May 2026
5323
997
4
-0.5
June 2026
5386
996.5
5
-0.5
July 2026
5444
996
6
-0.5
August 2026
5512
995.5
7
-0.5
September 2026
5620
995
8
-0.5
October 2026
5554
994.5
9
-0.5
Mixed & Men's Steel Sabre
The fighter has been on an island, I.E. has no direct link to most fighters, in 10 out of 10 months
January 2026
1384
1157.6
0
February 2026
1400
1156.9
1
-0.6
March 2026
1463
1156.3
2
-0.6
April 2026
1506
1155.7
3
-0.6
May 2026
1572
1155.1
4
-0.6
June 2026
1573
1154.4
5
-0.6
July 2026
1602
1153.8
6
-0.6
August 2026
1662
1153.2
7
-0.6
September 2026
1717
1152.5
8
-0.6
October 2026
1700
1151.9
9
-0.6
Match results
Mixed & Men's Steel Longsword - 4 fights
January 2026 - Midwinter Swordbash Alaska 2026
Midwinter Swordbash Alaska 2026
| Division | Stage | Opponent | Outcome | Opponent rating | Win chance |
|---|---|---|---|---|---|
| Mixed Steel Longsword | Pool 1 | Konstantin Khavanskii | DRAW | Unrated | |
| Mixed Steel Longsword | Pool 1 | Ethan Moncur | WIN | Unrated | |
| Mixed Steel Longsword | Pool 1 | Andrew Peterson | LOSS | Unrated | |
| Mixed Steel Longsword | Pool 1 | Xander Kaiser | LOSS | Unrated |
Mixed & Men's Steel Sabre - 7 fights
January 2026 - Midwinter Swordbash Alaska 2026
Midwinter Swordbash Alaska 2026
| Division | Stage | Opponent | Outcome | Opponent rating | Win chance |
|---|---|---|---|---|---|
| Mixed Steel Sabre | For Bronze | Andrew Peterson | LOSS | Unrated | |
| Mixed Steel Sabre | Pool 3 | Mark Foldenauer | DRAW | Unrated | |
| Mixed Steel Sabre | Pool 3 | Chris Castillo-Romo | WIN | Unrated | |
| Mixed Steel Sabre | Pool 3 | Ansel Bird | LOSS | Unrated | |
| Mixed Steel Sabre | Pool 3 | Seth Hunter | WIN | Unrated | |
| Mixed Steel Sabre | Quarter Finals | Kameron Matthews | WIN | Unrated | |
| Mixed Steel Sabre | Semi Finals | Matthew Cacy | LOSS | Unrated |