 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 International Championship and then lost 63 to Marco Fu.ref name201516ref Robertson saw off Michael Wild 43 and Michael Holt 41 in reaching the third round of the 