CREATE TABLE table_19828 ("Locale" TEXT, "Skip" TEXT, "W" FLOAT, "L" FLOAT, "PF" FLOAT, "PA" FLOAT, "Ends Won" FLOAT, "Ends Lost" FLOAT, "Blank Ends" FLOAT, "Stolen Ends" FLOAT, "Shot Pct." TEXT)

What is the highest value of PF when Ends Lost is 51?
SELECT MAX("PF") FROM table_19828 WHERE "Ends Lost" = '51'
SELECT MAX("PF") FROM "table_19828" WHERE "Ends Lost" = '51'