I just got off the phone with a spokesman for Major League Baseball, and he clarified that Elvis Costello is not
opening for Sheryl Crow next Saturday, July 11
, nor is he doing an entirely separate set of his own material. He'll come out during the show and join her for some songs. In other words, he'll be a special guest. The show, which takes place under the Arch, is still starting at 8 p.m.