Looking at the ATP rankings, I have to say it is quite alarming to see all the same old faces knocking around - there really is nobody new coming through, which is quite extraordinary.
It is not an encouraging sign for the future of the game.
Look at somebody like Mikhail Youzhny (pictured) who has climbed back up to number eight in the world rankings - equalling his best ever ranking which he first achieved at the start of 2008.
Players don't just reinvent themselves. The fact that he is in the top 10 is very interesting and doesn't say a lot for the standard of tennis that is out there at the moment.
The popular chorus seems to be that men's tennis just keeps getting better and better, but you could argue that the opposite is happening.
Youzhny is now 28 and for me he isn't dramatically better than he was at any previous time in his career.
David Ferrer is another example: he has just lost in Shanghai to Robin Soderling, but reached the final in Beijing and has emerged as a real dark horse for the rest of the season having previously seemed to be a player in decline.
What's more, he is doing all this on a hard court, far from his favourite surface - I don't quite get it, to be honest.
He really did look a top-10 player a few seasons ago, and whether he just suffered a crisis of confidence or something I'm not sure; but he is picking off big names again.
In many ways the men's game is starting to mirror the women's tour. We have got used to seeing all the top women beating each other year after year and, away from the elite group of three or four male players, the same thing is starting to happen in the men's game.
There is nobody shooting through saying 'I'm here, take me seriously', and older players like Ferrer and Youzhny are finding that they can easily play their way back into the top 10 if they can string a few consistent months together.
I said the elite group of "three or four players" because unless Andy Murray discovers his touch then he is in danger of being relegated from that top group which currently holds Rafael Nadal, Roger Federer and Novak Djokovic.
For a spell I thought it was Djokovic who was in danger of being left behind, but the Serb's form in the last few months, especially at the US Open, has been absolutely fantastic and he very much belongs in the top three again.
And it will stay a top three unless Andy does something between now and the end of the season.
Tennis can be very transient, and as a Murray fan I'm optimistic it will change, but there have been worrying signs.
His loss to Ivan Ljubicic in Beijing was just bizarre. I didn't actually see the match but the result was alarming and I don't want to see any more setbacks like that from him otherwise the end of the season can't come quick enough.
He's won his first two matches in Shanghai which is encouraging, but the microscope remains on him.