CREATE TABLE table_20276 ("Name" CLOB, "Overs Bowled" CLOB, "Maidens" FLOAT, "Runs Conceded" FLOAT, "Wickets" FLOAT, "Extras" FLOAT, "E.R." CLOB)

Name the most maidens when e.r. 5.11
SELECT MAX("Maidens") FROM table_20276 WHERE "E.R." = '5.11'
SELECT MAX("Maidens") FROM "table_20276" WHERE "E.R." = '5.11'