CREATE TABLE table_35057 ("Date" CLOB, "Tournament" CLOB, "Winning score" CLOB, "Margin of victory" CLOB, "Runner ( s ) -up" CLOB)

What was the winning score of the Valero Texas Open?
SELECT "Winning score" FROM table_35057 WHERE "Tournament" = 'valero texas open'
SELECT "Winning score" FROM "table_35057" WHERE "Tournament" = 'valero texas open'