Keith Olbermann’s mom has died — on baseball’s opening weekend, no less. I just watched his moving tribute to her, and she sounds like a truly remarkable woman — an opera lover, and a baseball fan who’d been going to New York Yankees games since 1934. (She met Babe Ruth when she was a toddler.) Keith showed an interview clip in which she displayed a truly impressive deadpan. Warmest condolences to her family and friends.