user: Question: What is the average To Par, when Player is "Billy Casper"?
Columns: ['Place', 'Player', 'Country', 'Score', 'To Par', 'Money ( $ )']
Types: ['text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['1', 'Billy Casper', 'United States', '71-68-69-74=282', 2.0, 12000.0]
SQL:

assistant: SELECT AVG("To Par") FROM "Table" WHERE "Player" = 'Billy Casper';