CREATE TABLE table_26928 ("Player" TEXT, "Played" FLOAT, "Sets Won" FLOAT, "Sets Lost" FLOAT, "Legs Won" FLOAT, "Legs Lost" FLOAT, "LWAT" FLOAT, "100+" FLOAT, "140+" FLOAT, "180s" FLOAT, "High Checkout" FLOAT, "3-dart Average" TEXT)

How man players checked out at 84?
SELECT COUNT("Player") FROM table_26928 WHERE "High Checkout" = '84'
SELECT COUNT("Player") FROM "table_26928" WHERE "High Checkout" = '84'