U.S. Open Straight Pool Championship

The U.S. Open Straight Pool Championship is a pocket billiards tournament held in the United States, and one of the few featuring the discipline of straight pool. After being disbanded for sixteen years, the event was resurrected in 2016.

Up to 48 players are used in this event.

The 48 players are divided into 8 groups with 6. The players in each group play round robin matches of race-to-100. The top three in each group proceed to the next round.

The remaining 24 players (8 of which will probably be granted byes) will enter a single-elimination phase where every match is race-to-150, except the finals which is race-to-200.

...
Wikipedia