By Dan Gartland It’s their Stanley Cup to lose. Good morning, I’m Dan Gartland. My Rangers aren’t doing too hot right now, but at least they’re not facing the Avalanche. In today’s SI:AM: 🏔️ Handshakes in Nashville ☘️ Al Horford’s heroics in Milwaukee 🎙️ Tom Brady’s retirement plans It’s the Avalanche’s Stanley Cup to loseThe vast majority of the NHL’s first-round playoff series are complete toss-ups right now. Six of the eight series are tied 2–2 at the moment. The Penguins beat the Rangers 7–2 last night to take a 3–1 advantage in that series. And then there are the Avalanche. They beat the …