CREATE TABLE table_38316 ("Date" CLOB, "Opponent" CLOB, "Score" CLOB, "Loss" CLOB, "Attendance" FLOAT, "Record" CLOB)

What is the date of the match with a 28-15 record?
SELECT "Date" FROM table_38316 WHERE "Record" = '28-15'
SELECT "Date" FROM "table_38316" WHERE "Record" = '28-15'