How do I solve 4 down in Daily Telegraph Cryptic 31234?

Question

Accepted Answer

4 down reads "Expected to join with student for fight" (4 letters); the answer is DUEL. 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.

Expected to join with student for fight (4)

4D — Expected to join with student for fight (4) — DUEL