How do I solve 20 down in Daily Telegraph Cryptic 31244?

Question

Accepted Answer

20 down reads "Close cup game that goes on fairly late" (7 letters); the answer is NIGHTIE. It's a charade: the answer breaks into parts in clue order, each part clued by a word or short phrase. No indicators needed; watch for standard abbreviations (RA = artist, US = American, IN = at home) and short synonyms. The full step-by-step breakdown is on this page.

Close cup game that goes on fairly late (7)

20D — Close cup game that goes on fairly late (7) — NIGHTIE