If you have chosen "Let coach decide" then your coach is supposed to start the best players. If he didn't play your 60k SG maybe he is not a better player than your other guards. Since you are selling him and I can have a look at his skills, I find he is a very one-dimensional player and if your guards are more rounded, they are better than him despite the salary comparison.
By the way, you are cheeky since you are day-trading with this best player of yours that he is not really your player or well only for a few days. I hope for you that you'll make 1M but I really doubt it ;)
In addition, it is forbidden to link to a player on the TL.
Sorry to be a nuisance today :)