CREATE TABLE table_75217 ("Home Run" FLOAT, "Game" FLOAT, "Date" CLOB, "Inning" CLOB, "Location" CLOB, "Opposing Pitcher" CLOB, "Team" CLOB)

When Efrain Valdez was pitching, what was the highest home run?
SELECT MAX("Home Run") FROM table_75217 WHERE "Opposing Pitcher" = 'efrain valdez'
SELECT MAX("Home Run") FROM "table_75217" WHERE "Opposing Pitcher" = 'efrain valdez'