CREATE TABLE table_3511 ("Outcome" TEXT, "No." TEXT, "Date" TEXT, "Championship" TEXT, "Surface" TEXT, "Opponent in the final" TEXT, "Score in the final" TEXT)

How many outcomes occur on the date of January 31, 2010?
SELECT COUNT("Outcome") FROM table_3511 WHERE "Date" = 'January 31, 2010'
SELECT COUNT("Outcome") FROM "table_3511" WHERE "Date" = 'January 31, 2010'