user: Question: Which Round has a Method of KO, and a Date of 1958?
Columns: ['Result', 'Opponent', 'Method', 'Date', 'Round']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['Win', 'Ted LaScalza', 'KO', '1958', 1.0]
SQL:

assistant: SELECT "Round" FROM "Table" WHERE "Method" = 'KO' AND "Date" = '1958';