CREATE TABLE table_203_166 (id DECIMAL, "pos" TEXT, "no" DECIMAL, "rider" TEXT, "manufacturer" TEXT, "laps" DECIMAL, "time" TEXT, "grid" DECIMAL, "points" DECIMAL)

how many positions below valentino rossi did john hopkins place in the 2008 malaysian motorcycle grand prix ?
SELECT (SELECT "pos" FROM table_203_166 WHERE "rider" = 'john hopkins') - (SELECT "pos" FROM table_203_166 WHERE "rider" = 'valentino rossi')
SELECT (SELECT "pos" FROM "table_203_166" WHERE "rider" = 'john hopkins') - (SELECT "pos" FROM "table_203_166" WHERE "rider" = 'valentino rossi')