user: Question: Who was the opponent when the loss was Wells (4-7)?
Columns: ['Date', 'Opponent', 'Score', 'Loss', 'Record']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['August 1', '@ Red Sox', '6 - 2', 'Sele (7-7)', '50-54']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Loss" = 'Wells (4-7)';