Nine clues have two possible answers, differing by a single letter. Definitions are given for both answers, but the ambiguous letter is not given by wordplay
These may be " 2 of the 9"
9a Antelope hit Luke, perhaps (4) B??K buck? but how does the clue work?
5d France's term for bumbling Boris? (6) R?S?I? (not certain of the S)