United at home triumphed, we understand (2,3)
I believe the answer is:
in one
'united' is the definition.
(I've seen this before)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for in one that I've seen before include "united" , "As a single unit" , "Combined" , "A hole . . . . . is a singular golf score" .)