If I had to guess, I would say no. Skorich, my starting center has proficient stamina, he logged between 100-105 minutes last week and dropped from proficient gs to avg game shape. Fortin, my starting PG has average stamina, he logged about the same minutes and dropped to respectable. I think that the formula that they use to calculate GS has to have a lot of random variables involved, or some players are just more prone to better game shape than others. Staying with the example of Fortin, this is the first time in the rough year that he has been on my roster where he has actually had a proficient game shape. He usually is respectable with an occasional strong popping up. Going into the playoff's last season I had trained game shape for 2 weeks in a row and he dropped from strong to respectable the first week, and then stayed there the second week. Both of those weeks his minutes where in the mid 70's range.