CREATE TABLE table_75088 ("Rank" TEXT, "Stadium" TEXT, "Capacity" FLOAT, "City" TEXT, "Country" TEXT, "Tournament hosted" TEXT)

What is the average capacity that has rod laver arena as the stadium?
SELECT AVG("Capacity") FROM table_75088 WHERE "Stadium" = 'rod laver arena'
SELECT AVG("Capacity") FROM "table_75088" WHERE "Stadium" = 'rod laver arena'