CREATE TABLE table_11368 ("Nat." TEXT, "Name" TEXT, "Since" FLOAT, "Goals" FLOAT, "Ends" FLOAT, "Transfer fee" TEXT)

What is the average Ends with a Since of 2003, and a Name with m rquez?
SELECT AVG("Ends") FROM table_11368 WHERE "Since" = '2003' AND "Name" = 'márquez'
SELECT AVG("Ends") FROM "table_11368" WHERE "Name" = 'márquez' AND "Since" = '2003'