user: Question: Who's the opponent when Diegomar Markwell is the loss?
Columns: ['Date', 'Opponent', 'Score', 'Loss', 'Save']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['3 / 17', '@ La New Bears', '4 - 5', 'Pan Wei-lun', 'Huang Chun-chung']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Loss" = 'Diegomar Markwell';