user: Question: Who did they lose to on May 20?
Columns: ['Date', 'Opponent', 'Score', 'Loss', 'Record']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['May 1', '@ Orioles', 'Postponed (rain) Rescheduled for May 2', 'Postponed (rain) Rescheduled for May 2', 'Postponed (rain) Rescheduled for May 2']
SQL:

assistant: SELECT "Loss" FROM "Table" WHERE "Date" = 'May 20';