By Dan Gartland Igor Shesterkin stood on his head again. Good morning, I’m Dan Gartland. I hope everyone enjoyed the holiday weekend. In today’s SI:AM: 🗽 The Rangers’ Game 7 blowout 🔮 100 predictions for the 2022 NFL season ☘️ How the Celtics made the NBA Finals 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. Igor Shesterkin stood on his head againIt wasn’t an overtime thriller like their Game 7 victory over the Penguins in the first round, but the Rangers survived another do-or-die game last night against the Hurr…