World No. 1 Naomi Osaka started her BNP Paribas Open title defense on a winning note Saturday after beating Kristina Mladenovic to reach the third round of the tournament.The top seed from Japan posted a 6-3, 6-4 victory over France's Mladenovic at the Indian Wells Tennis Garden, where she won her maiden title a year ago. Osaka, playing her first match under new coach Jermaine Jenkins, fired five aces against Mladenovic's one and sealed the win in 1 hour, 21 minutes."I've never been a defending champion before, so that was really new and I was super nervous. So I'm glad I could just win," s…READ FULL ARTICLE