CREATE TABLE table_14280 ("Game" FLOAT, "Date" CLOB, "Opponent" CLOB, "Score" CLOB, "Location" CLOB, "Record" CLOB)

Who is the opponent at america west arena?
SELECT "Opponent" FROM table_14280 WHERE "Location" = 'america west arena'
SELECT "Opponent" FROM "table_14280" WHERE "Location" = 'america west arena'