CREATE TABLE table_20973 ("Runs" TEXT, "Wicket" TEXT, "Batting partners" TEXT, "Batting team" TEXT, "Fielding team" TEXT, "Venue" TEXT, "Season" TEXT)

What batting partners were the most successful in 2004?
SELECT "Batting partners" FROM table_20973 WHERE "Season" = '2004'
SELECT "Batting partners" FROM "table_20973" WHERE "Season" = '2004'