CREATE TABLE table_name_28 (years_played INT, singles_win_loss VARCHAR, first_year_played VARCHAR)

How many years did the team that has a Singles win-Loss of 4-9 and first played before 1999?
SELECT SUM(years_played) FROM table_name_28 WHERE singles_win_loss = "4-9" AND first_year_played < 1999
SELECT SUM("years_played") FROM "table_name_28" WHERE "4-9" = "singles_win_loss" AND "first_year_played" < 1999