CREATE TABLE table_17442 ("Date" TEXT, "Winning Team" TEXT, "Score" TEXT, "Winning Pitcher" TEXT, "Losing Pitcher" TEXT, "Attendance" FLOAT, "Location" TEXT)

Who is the losing pitcher when the winning pitcher is roy oswalt?
SELECT "Losing Pitcher" FROM table_17442 WHERE "Winning Pitcher" = 'Roy Oswalt'
SELECT "Losing Pitcher" FROM "table_17442" WHERE "Winning Pitcher" = 'Roy Oswalt'