CREATE TABLE table_22753439_1 (winner VARCHAR, runner_up_a VARCHAR)

How many winners have a runner-up of A. Karthikeyan?
SELECT COUNT(winner) FROM table_22753439_1 WHERE runner_up_a = "A. Karthikeyan"
SELECT COUNT("winner") FROM "table_22753439_1" WHERE "A. Karthikeyan" = "runner_up_a"