user: Question: Who played against the Celtics on Sat. Feb. 23?
Columns: ['Game', 'Date', 'Opponent', 'Score', 'Location', 'Record']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [46.0, 'Fri. Feb. 1', 'Minnesota Timberwolves', '95-98 (OT)', 'FleetCenter', '26-20']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Date" = 'Sat. Feb. 23';