the above information is incomplete - or outdated - depending on how you look at it. you can lose players following the above advice.
when it comes to starts, the new rule is - you need to stay above 80% through the entire regular season. it is no longer good enough simply to end above 80%.
therefore, if you are evaluating end of regular season - then yes, 21/26 is enough. but if you are evaluating 9 games in, you need to have started at least 8.
hackerhog - i think the forums are just not that busy, hence the lack of a reply. you aren't the only one who knows though, and its not really a secret, i've personally seen it discussed at least 100 times.