marginal sports
Refers to sports that are not mainstream, often with limited participation or media coverage. Used in discussions of alternative or niche athletic activities.
Competitions for marginal sports often have few participants.
He is working to promote marginal sports.
Variant with interpunct; less common but seen in some contexts.
Loanword from English 'marginal sports'. The exact origin is uncertain, but it likely entered Japanese through sports sociology or journalism.