Is Semi going to make this team?
Semi and Wannamaker shouldn't make it over Waters and Green.
Based on what? Waters and Green playing 37 and 26 minutes, respectively, of preseason basketball?
Semi has shown he can play on the NBA level and was even a significant piece for us in a playoff series (we don't beat the Bucks in 2018 without his defense on Giannis).
Say what you want about Ojeleye, but he has, at the very least, proven that he can play solid defense while guarding multiple positions on the NBA level.
Green, on the other hand, has proven next to nothing and is already 26 years old. Just because he has looked decent in preseason doesn't mean we should hand him a roster spot over Ojeleye.
As for Waters? He's a tough kid and might be able to carve out a bench role at some point (a la Shane Larkin), and right now, the difference between him and Wanamaker is probably negligible, but given that we are so thin at point guard, I would rather give that roster spot to the more experienced guy in Wanamaker.
My general point is that people tend to fall in love with preseason when it means virtually nothing. Ojeleye has been on this team for two years now (going on three) and has at least shown he has a legitimate NBA skill.