CREATE TABLE table_5728 ("Date" TEXT, "Tournament" TEXT, "Location" TEXT, "Winner" TEXT, "Score" TEXT, "1st prize  (  $  ) " FLOAT)

Who is the winner of the H.E.B. Texas open?
SELECT "Winner" FROM table_5728 WHERE "Tournament" = 'h.e.b. texas open'
SELECT "Winner" FROM "table_5728" WHERE "Tournament" = 'h.e.b. texas open'