user: Question: What is the highest grid that has Gregorio Lavilla as the rider?
Columns: ['Rider', 'Bike', 'Laps', 'Time', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Troy Bayliss', 'Ducati 1098 F08', 20.0, '40:22.724', 1.0]
SQL:

assistant: SELECT MAX("Grid") FROM "Table" WHERE "Rider" = 'Gregorio Lavilla';