CREATE TABLE table_44331 ("Rider" TEXT, "Manufacturer" TEXT, "Laps" FLOAT, "Time" TEXT, "Grid" FLOAT)

what is the grid when the rider is mika kallio?
SELECT MAX("Grid") FROM table_44331 WHERE "Rider" = 'mika kallio'
SELECT MAX("Grid") FROM "table_44331" WHERE "Rider" = 'mika kallio'