Male
FIDE ID:
Joshua Posthuma
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| US Chess Masters 2025 | 11/26/2025 | 2327 |  United States |
| Royal City Masters 2025 | 08/01/2025 | 2250 |  Canada |
| Marshall Summer Inv GMA | 07/08/2025 | 2439 | United States |
| 53rd Annual World Open | 07/02/2025 | 2305 | United States |
Joshua Posthuma Opening Repertoire with White pieces
| ECO | Opening | Games |
| D30 | Queen's gambit declined | 10 games |
| E04 | Catalan, open, 5.Nf3 | 7 games |
| E01 | Catalan, closed | 6 games |
| A45 | Queen's pawn game | 5 games |
Joshua Posthuma Opening Repertoire with Black pieces
| ECO | Opening | Games |
| B10 | Caro-Kann defence | 7 games |
| B12 | Caro-Kann defence | 7 games |
| B13 | Caro-Kann, exchange variation | 7 games |
| A47 | Queen's Indian defence | 6 games |
