In a series of major upsets, after Stansilas Wawrinka, world number two Li Na also made a first round shock exit from the French Open Tennis tournament at Paris.In the Women's Singles first round, match played last evening, Chinese Li Na was stunned by unseeded French's Kristina Mladenovic by 5-7, 6-3, 1-6. In the other Women's Singles match, World number 4, Simona Halep registered a straight set victory over Russian Alisa Kleybanova. Romanian, Halep recorded a 6-0, 6-2 victory over Kleybanova to advance to the second round. Italian ace Sara Errani also booked her second round spot as she defeated American Madison Keys 7-5, 3-6, 6-1.In the Men's Singles event yesterday, Spaniard David Ferrer advanced into the next round. In his first round match World number 5, David Ferrer ousted Dutchman Igor Sijsling in straight sets of 6-4, 6-3, 6-1. Wimbledon Champion Andy Murray also registered an easy victory over Kazkh Andrey Golubev 6-1, 6-4, 3-6, 6-3.Top seeds, Rafael Nadal, Novak Djokovic, Roger Federer in the Mens and Agnieszka Radwanska, Maria Sharapova, Petra Kvitova and Serena Williams in the Womens singles category, have already advanced to the second round.