CREATE TABLE table_name_74 (laps INT, rider VARCHAR, grid VARCHAR)

What is the sum of laps for Karl Muggeridge on a grid less than 16?
SELECT SUM(laps) FROM table_name_74 WHERE rider = "karl muggeridge" AND grid < 16
SELECT SUM("laps") FROM "table_name_74" WHERE "grid" < 16 AND "karl muggeridge" = "rider"