people make a comment about a Ben Murdock playing instead of Jimmer, that wasn't excusable after they both had playing time when it mattered, and the difference was clear.
I also think the best players should play, but sometimes you have to let some one play when it was on the line, to know what they are really made of. An example of this is the way Michael Loyd played in the late season of his soph year, when he got real mins. I am not suggesting it is okay to be mediocre, but UNC won 28 games with a walk on point guard not that long ago, sometimes gamers are gamers, and you dont know it, until they play in games.