By Dan Gartland Here’s what you need to know about allegations of misconduct concerning three former NWSL head coaches. Good morning, I’m Dan Gartland. I can’t believe some of the things I read in U.S. Soccer’s investigation. In today’s SI:AM: ⚽ The damning NWSL report 🏁 NASCAR’s biggest underdog 💯 The next installment of our NBA Top 100 If you’re reading this on SI.com, you can sign up to get this free newsletter in your inbox each weekday at SI.com/newsletters. NWSL report: ‘Concerning allegations of abusive behavior’The U.S. Soccer Federation released the findings yesterday of the independe…