Serena Williams was forced to dig deep against world No 174 Mihaela Buzarnescu, as she continued her bid for a fourth French Open title with a battling three-set victory at Roland Garros.
Serena digs deep to reach round three


Serena Williams was forced to dig deep against world No 174 Mihaela Buzarnescu, as she continued her bid for a fourth French Open title with a battling three-set victory at Roland Garros.