A finalist in two ranking tournaments, the 2006 Grand Prix and the 2007 China Open, Cope also reached the semi-finals of the 2011 Masters. He reached his highest ranking, 13th, in September 2010, but thereafter developed a tremor which has been attributed to being either an essential tremor or the yips, which makes his cue arm shake. This condition caused Cope to slip markedly down the rankings in the 2010s, culminating in his relegation from the main tour at the end of the 2016–17 season. He was known for his fast, entertaining style, being nicknamed "Shotgun" due to his speed around the table and aggressive playing style.