CREATE TABLE table_74797 ("Home team" CLOB, "Home team score" CLOB, "Away team" CLOB, "Away team score" CLOB, "Venue" CLOB, "Crowd" FLOAT, "Date" CLOB)

When did the match take place that had a home team score of 7.9 (51)?
SELECT "Date" FROM table_74797 WHERE "Home team score" = '7.9 (51)'
SELECT "Date" FROM "table_74797" WHERE "Home team score" = '7.9 (51)'