CREATE TABLE table_26153 ("Edition" TEXT, "Round" TEXT, "Date" TEXT, "Against" TEXT, "Surface" TEXT, "Opponent" TEXT, "W/L" TEXT, "Result" TEXT)

Who was played against when there was a loss and in the gi po round?
SELECT "Against" FROM table_26153 WHERE "W/L" = 'Loss' AND "Round" = 'GI PO'
SELECT "Against" FROM "table_26153" WHERE "Round" = 'GI PO' AND "W/L" = 'Loss'