 Complete the following phrase:  In the second round of the 2013 Wuxi Classic, Ding lost 51 to Joe Perry. At the minor-ranking Bluebell Wood Open, he made a rare 146 break while beating Jimmy Robertson in the quarter-finals before losing 43 to Marco Fu in the semi-finals.ref name201314ref In September 2013, Ding won his seventh ranking event title at the 