Who was the first bowler to take five wickets in a One Day International match?

Answer 1

List of international cricket five-wicket hauls by Dennis Lillee. Dennis Lillee is a former Australian cricketer who took 24 five-wicket hauls during his career in international cricket. A five-wicket haul (also known as a "five–for" or "fifer") refers to a bowler taking five or more wickets in a single innings.

Answer 2

Dennis Lillee got 5 for 34 against Pakistan at Leeds on the 7th of June, 1975 to become the first ODI bowler to do that