Cannot delete players on iscorecentral page

[FTMSupport]

It sounds like you are creating players multiple times. This thread from 2013 would not be relevant. You can use the Merge option in the player list to combine the multiple players back into a single player. See this link for more information:

http://iscoresports.com/manual/#h.ehnr4e6qptw" onclick="window.open(this.href);return false;

(see the Merge option)