user: Question: Round of First had what opponent?
Columns: ['Event', 'Round', 'Result', 'Opponent', 'Score']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Flyweight', 'First', 'bye', 'bye', 'bye']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Round" = 'First';