USA with the following modifications:
- Mercy rules: 15, 12, and 10 after 3, 4, and 5 innings.
- Drop dead time at after 80 minutes. If home team is ahead, score is final. If home team did not get final ups, score reverts back to previous completed inning
- Time limit procedure: once the last out is made in an inning, the new inning starts at that time.
- Double coin flip before each game.
- Continuous batting order in pool play IS a USA rule and is available to any team choosing to use it.