Matt Chapman joined some select San Francisco baseball company — including Willie Mays — with his massive day at the plate. The 33-year-old third baseman hit his fourth career grand slam, a three-run homer and added a sacrifice fly to finish with a career-high eight RBIs in the Giants’ 18-3 rout of the slumping Chicago Cubs. The eight RBIs tied the Giants’ San Francisco-era individual game record, shared by five others. The first to do it after the team relocated from New York in 1958 was Mays in on April 30, 1961. The other Giants on the list are Orlando Cepeda, Brandon Crawford, Joc Pederson and Wilmer Flores.