user: Question: Who was the opponent in which the bout ended in round 2?
Columns: ['Res.', 'Record', 'Opponent', 'Method', 'Event', 'Round', 'Time', 'Location']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Loss', '3-2', 'Eugene Jackson', 'KO (punch)', 'UFC 21', 2.0, '1:19', 'Cedar Rapids, Iowa , United States']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Round" = 2.0;