CREATE TABLE table_204_53 (id DECIMAL, "date" TEXT, "result" TEXT, "opponent" TEXT, "event" TEXT, "location" TEXT, "method" TEXT, "round" DECIMAL, "time" TEXT)

how many events did grigorian attend in 2010 ?
SELECT COUNT("event") FROM table_204_53 WHERE "date" = 2010
SELECT COUNT("event") FROM "table_204_53" WHERE "date" = 2010