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 | 5625 (top 68.2% of island) | 993.9 | 4807 (January 2026) | 999.1 (January 2026) |
| Sabre | |||||
| - Mixed & Men's Steel Sabre | January 2026 | 1741 (top 47.5% of island) | 1151.3 | 1386 (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 11 out of 11 months
January 2026
4807
999.1
7113
0
February 2026
4869
998.6
7208
1
-0.5
March 2026
4976
998.1
7367
2
-0.5
April 2026
5130
997.6
7584
3
-0.5
May 2026
5343
997
7909
4
-0.5
June 2026
5404
996.5
8028
5
-0.5
July 2026
5460
996
8087
6
-0.5
August 2026
5527
995.5
8178
7
-0.5
September 2026
5634
995
8287
8
-0.5
October 2026
5714
994.5
8399
9
-0.5
November 2026
5625
993.9
8247
10
-0.5
Mixed & Men's Steel Sabre
The fighter has been on an island, I.E. has no direct link to most fighters, in 11 out of 11 months
January 2026
1386
1157.6
3018
0
February 2026
1403
1156.9
3031
1
-0.6
March 2026
1467
1156.3
3151
2
-0.6
April 2026
1507
1155.7
3216
3
-0.6
May 2026
1579
1155.1
3398
4
-0.6
June 2026
1581
1154.4
3392
5
-0.6
July 2026
1609
1153.8
3442
6
-0.6
August 2026
1671
1153.2
3558
7
-0.6
September 2026
1727
1152.5
3672
8
-0.6
October 2026
1777
1151.9
3751
9
-0.6
November 2026
1741
1151.3
3666
10
-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 |