CREATE TABLE table_56740 ("Player" TEXT, "Overs" TEXT, "Runs" TEXT, "Wkts" TEXT, "Mdns" TEXT, "Econ" TEXT)

Tell me the wkts for econ of 4.23
SELECT "Wkts" FROM table_56740 WHERE "Econ" = '4.23'
SELECT "Wkts" FROM "table_56740" WHERE "Econ" = '4.23'