He last played on the PDC pro tour in the Killarney Pro Tour 1 in October 2013 and his last regional match was in the Ireland Players Championship 6 in April 2014. He was once Ireland's top ranked player. Mick picked up the 2006 Ireland Open Classic title with a 7-0 (sets) win over Kevin Painter in the final in Castlebar, County Mayo.

It marked a successful 12 months for Mick, who reached the final of the PDPA Players Championship in Scotland in November 2005 before qualifying for the Las Vegas Desert Classic the following June. He knocked out America's Ray Carver 6-3 in the first round before losing to Wes Newton at the last 16 stage. The Irishman went down 8-7 to Mark Walsh in the third round at the 2006 UK Open Darts finals, but bounced back in Las Vegas to come through the qualifiers.

In the 2007 PDC World Darts Championship he reached the second round before losing to Phil Taylor 4-1 in sets, despite achieving an average of 101.82. He lost in the same round the next year, this time to youngster Kirk Shepherd, who reached the final. In the US Open Darts in 2007 he reached the 5th round before losing to Canadian John Part.

In the 2008 Las Vegas Desert Classic, McGowan made a reasonable impression. He played Terry Jenkins in the first round and lost 6-4 in a tight game. He also qualified for World Grand Prix finishing Ireland's number 1 player in the order of merit. He drew Jenkins yet again and was beaten 2-0 in sets.

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