Debate Rigged?

Donald Trump now claims that the Monday Presidential Debate was 'rigged.' As a person who viewed the event I saw no evidence of such a 'rigging.' Just how it was specifically rigged, in the mind of Mr. Trump, is anyone's guess. Just because someone says something doesn't necessarily make it so. I know that Mr. Trump making these allegations fires up his supporters. But running for the Office of President of the United States is a much higher calling than making an allegation or an unfounded comment. I make it a point to watch many of Mr. Trump's rallies and I have noticed all sorts of comments that inflame, some of them that can be ignored but many that border on being harmful. Unless, and until, there is third party proof, of a 'rigging' Mr. Trump has to lay off. This isn't funny or appropriate anymore. Dick