25, 23 down: Vaccine inventor accepts 1999 boxer as alleged match fixer (5, 5)
DA does not often disappoint. Bamboozle, yes; disappoint, rarely; so I’m supposing this will be a category of clue that will not see much expansion.
Salk is the inventor of the polio vaccine and when IMM for 1999 and Ali for boxer are added into the mix, you get the letters to form Salim Malik, the match fixer. The error is, though, that the Roman numeral for 1999 is MIM, not IMM!