Serbia U19
A. Kostic's 2025 game log below shows every game played that season, with points, rebounds, assists, steals, blocks, minutes, field goal attempts, and three-point attempts. Click any game row to view the full box score. StatBallers updates player game logs after every round of fixtures.
| Date | Matchup | Result | MIN | PTS | REB | AST | STL | BLK | FG | 3P | +/- |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 6 | @ France U19 | W 96–93 | 31:28 | 22 | 2 | 2 | — | — | 1/2 | 6/8 | — |
| Jul 5 | @ Argentina U19 | W 76–73 | 29:22 | 25 | 5 | 1 | — | — | 1/2 | 6/12 | — |
| Jul 4 | vs Dominican Republic U19 | W 94–88 | 25:35 | 24 | 4 | 1 | — | — | 2/2 | 5/13 | — |
| Jul 2 | vs Germany U19 | L 83–92 | 21:52 | 11 | 2 | 0 | — | — | 1/5 | 1/8 | — |
| Jul 1 | vs New Zealand U19 | W 103–97 | 16:33 | 11 | 0 | 0 | — | — | 2/4 | 1/4 | — |
| Jun 29 | vs Argentina U19 | L 66–71 | 24:09 | 9 | 2 | 2 | — | — | 1/3 | 2/8 | — |
| Jun 28 | @ Mali U19 | L 70–72 | 28:01 | 10 | 4 | 3 | — | — | 1/6 | 2/8 | — |