Jonathan Kostna
Throws: Right
Jonathan Kostna — Current Teams
2026-27 World Team Ranking Men's 4-Player: Team Drew Willms
| Event Results: (Best 4 Results counted) | ||
| MCT Atkins Curling Supplies Classic | N/A | 0.750 |
| World Team Ranking YTD: | 0.750 | |
| World Team Ranking Start (50.0%): | 0.000 | |
| Back to Standings | World Team Ranking Total: | 0.750 |