 Complete the following phrase:  Muramatsu qualified for the 2015 World Championship by defeating Masumi Chino 65 in the Japanese Qualifier. He lost to Boris Koltsov 42 in the preliminary round. Muramatsu entered PDC Qualifying School and was knocked out in the last 16 on two of four days which helped him finish inside the top 18 on the Order of Merit who earn two-year PDC tour cards. After whitewashing China 50, Muramatsu and Hashimoto were knocked out of the 