 Complete the following phrase:  He qualified for the 2015 German Darts Masters and overcame Rowby-John Rodriguez 64, before losing 62 to Michael van Gerwen. Stone also reached the second round of the Dutch Darts Masters by beating Dean Winstanley 64 with an average of almost 100, but then narrowly lost 65 to Steve Beaton. His tour card expired at the end of 2015 and with Stone ranked 100th on the Order of Merit he needed to enter Q School. A single last 16 showing over the four days was not enough for Stone to win his place back. A trio of last 64 defeats saw him qualify for the 