Britain's Daily Mirror wrote earlier this week, "The joke in England has always gone that Andy Murray is Scottish when he loses and British when he wins. If there is an independent Scotland, the joke is on us."
The confusion and indecision to settle on one nationality is, no doubt, frustrating for fans.
Bring in the Andy-Murray-O-Meter, created in 2005 after Murray won the U.S. Open boys' title. The gauge uses "a top-secret algorithm in order to ascertain Andy's British or Scottishness to the nearest one per cent."
With talk of Scottish separation at the forefront, it appears their isn't much need for the Andy-Murray-O-Meter anymore, after the two-time Grand Slam champion drew his line in the sand on Thursday.
Murray, who was born in Dublane, Scotland, tweeted he would vote "Yes" in the referendum on separation.
Unfortunately for Murray he is ineligible to cast a vote since he now lives near London.
His support for Scottish independence comes just weeks after refusing to be drawn one way or the other on whether he backed secession, but his previous remarks on the issue had suggested he supported the union.
Murray has avoided commenting on anything related to Scottish-British politics since the 2006 World Cup when he said he'd support anyone but England. He later said he wasn't serious when he made that statement.
Nevertheless, Murray was attacked for his comments.
The experience has since left Murray wavering on the fence, uncomfortable with leaning too much to one side.
Earlier this summer, Murray stated he disliked a stunt by Scottish nationalist leader Alex Salmond, who waved the flag of St. Andrew's Cross behind the British Prime Minister David Cameron's head following his Wimbledon victory in 2013.
The mixed feelings continued last month when Murray surprised many, admitting he could see himself play for Scotland at the Olympics if it became independent. Murray won gold for Great Britain at the 2012 Games in London.
Murray claims the negativity of the 'No' campaign has swayed him to support Scottish independence. But perhaps it was the passionate plea from the Simpson's Groundskeeper Willie who really got Murray to say 'Yes'.