David Ross on new Cubs broadcaster and his former ESPN partner Boog Sciambi, who makes his debut Tuesday: “I texted him and asked him if he was tired of answering questions about me. … He’s a great guy, a smart guy, a quality human being. He’s fun, but he also knows the game. He knows how to talk analytics, and he knows how to talk music genres. He’s funny, witty, a really good guy. I think the Cubs got a really special guy. As much as I liked Len (Kasper), if there was a replacement, they nailed it.”