CREATE TABLE table_31079 ("Week of" TEXT, "Tournament" TEXT, "Champion" TEXT, "Runner-up" TEXT, "Semifinalists" TEXT, "Quarterfinalists" TEXT)

Who were the semifinalists in the tournament where Mats Wilander 7-6, 6-3 was declared the champion?
SELECT "Semifinalists" FROM table_31079 WHERE "Champion" = 'Mats Wilander 7-6, 6-3'
SELECT "Semifinalists" FROM "table_31079" WHERE "Champion" = 'Mats Wilander 7-6, 6-3'