MANILA, Philippines – Siblings Bernardine and Sally Mae Siso ruled their respective side to lead the winners in the first leg of the Peugeot Philippine Tennis Open (PPTO) at the Don Gregorio Pelaez Sports Complex in Cagayan de Oro recently. Bernardine, 22, stamped his class over the 44-year-old Danilo Sajonia, scoring a 6-3, 6-1 victory to…