CREATE TABLE table_6373 ("Year" TEXT, "Team" TEXT, "Attempts" TEXT, "Completions" TEXT, "Completion %" TEXT, "Yards" TEXT)

Which yard has a Completion of 64.9%?
SELECT "Yards" FROM table_6373 WHERE "Completion %" = '64.9%'
SELECT "Yards" FROM "table_6373" WHERE "Completion %" = '64.9%'