As to their rules, I couldn’t exactly find them but did find rules for the Ultimate Pool League 10b. It seems to have its own rules but it looks like they tried to use the WPA rules (and someone missed some words).
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If those are the rules they actually used, then I maintain my view that you don’t have to call the shot Justin made even if it’s prudent to do so - curious of you agree (or at least agree if it’s WPA rules).
Yes, it was Easton and a Vietnamese semi-pro player. The CSI call everything rules are crystal clear and he was technically right. I also wondered at the time whether a more rules based culture for pool might have influenced his decision to call the incident.