NEW YORK–Ben Shelton’s record-breaking late-night victory over Carlos Alcaraz has reignited the debate over scheduling at the US Open, where a flurry of finishes in the early hours have prompted calls for a curfew or radical demands for shorter matches. Key points and original sources are listed below.

• NEW YORK–Ben Shelton’s record-breaking late-night victory over Carlos Alcaraz has reignited the debate over scheduling at the US Open, where a flurry of finishes in the early hours have prompted calls for a curfew or radical demands for shorter matches. Shelto...S1S2