Maria João successfully defends WTA Stuttgart title . Last year she beat 2013 Australian Open champion Victoria Azarenka in the Stuttgart final before claiming her Roland Garros triumph . ` She beats China 's Li Na in Sunday 's final in straight sets . She is defending her French Open crown next month . Winner of the tournament also lands a Porsche 911 car .
Maria João successfully defends WTA Stuttgart title . She beats China 's Li Na in Sunday 's final in straight sets . She is defending her French Open crown next month . Winner of the tournament also lands a Porsche 911 car .