APA 9-Ball Doubles Championship December 14, 2021 18:27 Updated The 9-Ball Doubles Championship is open to any combination of players with a skill level limit of 10. Click here for dates, Rules For Participation, etc.! Related articles 8-Ball Classic & 9-Ball Shootout 8-Ball World Championship & 9-Ball World Championship How to Keep Score in 9-Ball? How do I join? APA 8-Ball Doubles Championship Comments 0 comments Article is closed for comments.