CREATE TABLE table_50525 ("Tournament" TEXT, "Surface" TEXT, "Week" TEXT, "Winner" TEXT, "Finalist" TEXT, "Semifinalists" TEXT)

Where was the tournament where the match was on a hard surface and jan-michael gambill (19) was the finalist?
SELECT "Tournament" FROM table_50525 WHERE "Surface" = 'hard' AND "Finalist" = 'jan-michael gambill (19)'
SELECT "Tournament" FROM "table_50525" WHERE "Finalist" = 'jan-michael gambill (19)' AND "Surface" = 'hard'