 Complete the following phrase:  At the Haining Open, Robertson reached the semi-finals by knocking out Xiao Guodong and Thepchaiya Un-Nooh from the fourth round stage, but he lost 42 to Ding Junhui. He reached the last 16 of a ranking event for the first time in his career by beating Darryl Hill 62 and Barry Hawkins 64 at the 