dang, i just did the team builder solos and got an 87 out of the pack instead of a 90

Ok ty for this post. I'm was way way behind on my team builder challenges and was grinding them last couple days. I still have like a 100 stars to catch up. My last 2 pulls were 87s. Luckily I was able to fit both into my vikings TT but I don't know if I'm gonna continue the grind if we aren't getting the 90s. Ty this is very helpful