user: Question: Who was the opponent that anke huber played against in the Leipzig tournament?
Columns: ['Outcome', 'Date', 'Tournament', 'Surface', 'Opponent', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Winner', '20 August 1990', 'Schenectady', 'Hard', 'Marianne Werdel', '6–1, 5–7, 6–4']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Tournament" = 'Leipzig';