Is this the Defining Moment of Andy Murray's Career?

The term "defining moment" is one of the most difficult to define.  What is that moment where "good" gets turned into "great".  Where does someone turn from a good player who just has not made it to the top into a star.  Well, I offer some insight into what I think Andy Murray's defining moment is, in light of his new major championship.

Was his defining moment the singles Olympic gold?  The Olympics this year were played at the All England Club.  This was the chance for Murray to eradicate many demons and win in his home country.  And boy did he do that.  Andy Murray never dropped a set as he went on to win the Olympic gold.  Along the way he beat the 2011 breakout star Novak Djokovic, before whipping Roger Federer at the same place Federer had beat him the previous month at Wimbledon.  One could see the relief and joy on his face when he put away Federer.  The crowd delirious.  This could have easily been the defining moment in Andy Murray's career.  However, because he did not have that major championship, the Olympic gold in singles was not enough to be the defining moment of his career.

Was it the US Open championship?  This was Andy Murray's first major, and although not in England, still was an impressive feat.  I was someone who thought Murray would never breakthrough.  Would never win that elusive major.  Andy Murray would have none of that.  He overcame the rising star Milos Raonic, took down the pesky Tomas Berdych, before beating Novak Djokovic in an epic final.  Murray took the first two sets 7-6 (10), 7-5, before losing the next two sets in decisive fashion.  Murray could have folded here, but did not.  He fought back, only giving up two games, to win the match in five.  This seems to have been the defining moment in Murray's career.  That time where he went from a good second tier player, to one of the best in the game today.

We must also consider that this defining moment might be in the future.  The moment could be at the All England Club next year, this time for Wimbledon.  If Andy Murray were to win at Wimbledon next year, a major championship this time aroumd, then I would say that the major was easily a better defining moment than the one just occured.  We must also take into account the possibility that Murray might never win a major again.  Andy Murray could get lazy, bathing in his major spotlight, and have Federer, Nadal, and Djokovic overtake him once again.  That "defining moment", would then be seen as an abberation.  However unlikely as it may be, it is certainly a possibility.

Andy Murray finally won a major championship.  Was this the "defining moment" of his career?