 Complete the following phrase:  The 201213 season began very well for Campbell as he qualified for the Wuxi Classic, where he reached the first ranking event semi-final of his 21-year professional career. He dispatched Stephen Lee, Fergal OBrien and Mark Williams to play Ricky Walden in the semis.ref name201213ref He lost the match 16 and stated afterwards that he didnt feel comfortable at all and put it down to nerves. However, he also felt that winning a ranking tournament was now within his reach. He qualified for four of the next seven ranking events, but lost in the first round on each occasion. He had his best run of the season since Wuxi at the China Open where he overcame Peter Ebdon 53 and Graeme Dott 54 to make the quarter-finals. There, Campbell lost 25 to Neil Robertson. Campbell qualified for the 