user: Question: What round was less than 545 overall for San Francisco Giants?
Columns: ['Player', 'Position', 'Round', 'Overall', 'MLB Team']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['Ryan Verdugo', 'LHP', '9th', 267.0, 'San Francisco Giants']
SQL:

assistant: SELECT "Round" FROM "Table" WHERE "Overall" < 545.0 AND "MLB Team" = 'San Francisco Giants';