CREATE TABLE table_204_638 (id DECIMAL, "year" DECIMAL, "tournament" TEXT, "surface" TEXT, "round" TEXT, "winner" TEXT, "score" TEXT)

did john mcenroe score at least 7 points i 'm the 1991 game
SELECT (SELECT "score" FROM table_204_638 WHERE "winner" = 'john mcenroe' AND "year" = 1991) >= 7
SELECT (SELECT "score" FROM "table_204_638" WHERE "winner" = 'john mcenroe' AND "year" = 1991) >= 7