CREATE TABLE table_204_463 (id DECIMAL, "year" DECIMAL, "division" DECIMAL, "league" TEXT, "regular season" TEXT, "playoffs" TEXT, "open cup" TEXT)

what is the number of times the seattle sounders has reached the 2nd round of the open cup ?
SELECT COUNT(*) FROM table_204_463 WHERE "open cup" = '2nd round'
SELECT COUNT(*) FROM "table_204_463" WHERE "open cup" = '2nd round'