Stephen Hendry has criticised the new ranking system, which sees the list revised four times a year rather than at the end of the season.
The seedings for the UK Championship and Wembley Masters will be determined after the second European Players Tour Championship event in Bruges in October.
Hendry is currently 11th in the official rankings but is going through a poor run of form and is sweating on his place in the elite group.
He told 110sport.tv, the website of his management group: "A number of top 16 players are looking over their shoulders and it is worrying that a bad patch could have major consequences.
“I am not moaning because I am down there just now – I just don’t think its right that it isn’t based over a whole season and a lot of players have worked very hard to get into the top 16 in the first place.
"Over the season each of these players will hit a run of form but if they have a bad patch at the start of the season they could be in trouble.
“Another bad run and I could find myself missing out on the Masters at Wembley. It is a very punishing system.”
Indeed it is. It has already cost Liang Wenbo his top 16 place after just a few months - or rather he has, by not winning enough matches.
The idea of the new list is to reward success and no longer protect players who can't win a match.
Many players love it because it gives them the chance to scale the heights but others, like Hendry, are worried because it puts extra pressure on them at a time they are struggling for form.
There are arguments on both sides but I think it's better that a player who wins a tournament receives an immediate benefit from that success.
There have been top 16 players in the past who haven't won a match all season but have still been seeded through to the Crucible while ranking tournament winners have had to qualify.
Top 16 players have also kept their places by winning no more than a handful of matches all year.
Hendry, of course, is more entitled than most to express a view on this but it is surely a reflection on his own current plight.
When he was the undisputed king of snooker, I doubt he could have cared less what the ranking system was.
He would have been at the top regardless.