Another day on the clay at the French Open, another reigning Australian Open champion bites the red dust.

China's second seed Li Na lost her first Grand Slam match since winning the title in Melbourne, falling to Kristina Mladenovic of France 7-5, 3-6, 6-1 on Tuesday. The loss came a day after men's Australian Open champion Stan Wawrinka was eliminated in the first round.

Li, who won the French Open title in 2011, ended up with 37 unforced errors on a cool and overcast day at Roland Garros. Mladenovic had only 25 errors.