CREATE TABLE table_55596 ("Year" FLOAT, "Network" TEXT, "Play-by-play" TEXT, "Color commentator ( s ) " TEXT, "Ice level reporters" TEXT)

Who did the play-by-play before 1998 on Fox network?
SELECT "Play-by-play" FROM table_55596 WHERE "Year" < '1998' AND "Network" = 'fox'
SELECT "Play-by-play" FROM "table_55596" WHERE "Network" = 'fox' AND "Year" < '1998'