World Number One Roger Federer achieved something that many thought would never happen for him. Earlier this year, he won the French Open for the first time in his career to complete the career Grand Slam.
It is hard to say what was the turning point for Federer in terms of winning the French Open, but I have picked three moments all of which could be seen as the turning point for the man regarded by many as the greatest.
The first was Federer's victory against Rafael Nadal in the final of the Madrid Masters 1000 event. It was only Federer's second victory against Rafa on clay, and it snapped a five match losing streak to the Spaniard.
It was also Federer's first Masters title in almost two years.
The second potential turning point was the epic semi-final in Madrid between Nadal and Novak Djokovic, which Nadal won 3-6, 7-6, 7-6. It was a match that lasted over four hours.
Nadal and Djokovic had been in the finals of the previous two Clay Court Masters events and appeared to be the two best players heading into the French Open. However both players suffered early defeats at the clay court Grand Slam.
Perhaps it is possible that that epic encounter in Madrid came at a price to both men, and the man to benefit was Federer.
The third potential turning point is the fourth round of this year's French Open. Nadal had been knocked out by Robin Soderling, and right away everyone was backing Federer to take the title.
But the next day Federer himself was down two sets to love against Tommy Haas. Haas had a break point in the third set, which would have had him serving for the match.
However Federer fought back with an inside forehand winner that kissed the line, and he came through in five dramatic sets.
Interestingly after the match: Federer said that he felt after he hit that shot, not only did he know he would win the match, but he knew he would win the tournament.
If you are a betting person then you would do well to back Nadal to regain his French Open title next year.