user: Question: What is the highest value under the column goals against?
Columns: ['No.', 'Player', 'Club', 'Games Played', 'Minutes', 'Goals Against', 'GA Average', 'Wins', 'Loses']
Types: ['real', 'text', 'text', 'real', 'real', 'real', 'text', 'real', 'real']
Sample row: [1.0, 'Brad Friedel', 'Columbus Crew', 29.0, 2609.0, 35.0, '1.21', 14.0, 15.0]
SQL:

assistant: SELECT MAX("Goals Against") FROM "Table";