CREATE TABLE table_53618 ("Year of award" FLOAT, "Athlete" TEXT, "Nation of citizenship" TEXT, "Team" TEXT, "Competition  ,  governing body  ,  or league" TEXT, "Sport" TEXT)

Which tennis team is from the United States?
SELECT "Team" FROM table_53618 WHERE "Sport" = 'tennis' AND "Nation of citizenship" = 'united states'
SELECT "Team" FROM "table_53618" WHERE "Nation of citizenship" = 'united states' AND "Sport" = 'tennis'