user: Question: Who was the opponent when they played at Delta Center with a record of 27-13?
Columns: ['Game', 'Date', 'Opponent', 'Score', 'Location/Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['30', 'Jan 2', 'at San Antonio Spurs', '80-83 L', 'Alamodome/15,220', '22-8']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Location/Attendance" = 'Delta Center' AND "Record" = '27-13';