CREATE TABLE table_28137 ("Player" TEXT, "Nationality" TEXT, "Finals" FLOAT, "Win-Loss" TEXT, "Year ( s ) " TEXT)

What was the win-loss record for the player from Switzerland?
SELECT "Win-Loss" FROM table_28137 WHERE "Nationality" = 'Switzerland'
SELECT "Win-Loss" FROM "table_28137" WHERE "Nationality" = 'Switzerland'