It's one of the more obscure rules of the dance.

The Prelate knows all the obscure rules, the old rules.

Their objections reflect how the process can hinge on relatively obscure rules.

The first main story arc focuses on a tournament with obscure rules called Lausbuben Battle Royal.

Under an obscure rule, Levingston, the last player to foul out, was allowed to come back into the game at the cost of a technical foul.

The moment of truth comes, you execute perfectly but an official nullifies the play by invoking an obscure rule.

It's an obscure rule, but it allows a team to try to kick a field goal from the spot of a fair catch.

For those purposes, the more obscure and unintuitive the rule, the better.

The name is attributed to an obscure rule that the university president, or "prexy", is given exclusive use of the area for livestock grazing.

This obscure rule dated to the late 1970s.