 Complete the following phrase:  Doherty had an excellent start to the 201112 season as he qualified for the Australian Goldfields Open, where he reached his first ranking event semi-final since 2006. He beat Mark Selby 53 in the quarter-finals, sealing the match with a clearance which he described as the best of his career. Doherty also stated that he almost quit the game in 2009, following his downturn in form which saw him drop to world number 55. He failed to replicate his form in the semi-finals, however, as he was beaten 26 by Mark Williams. In the remainder of the season Doherty qualified for the 