Cubs-White Sox rivalry is missing something — commercials!

You know what the White Sox-Cubs series next week needs? A commercial. Here me out. As recently as the late aughts, Cubs manager Lou Piniella and Sox skipper Ozzie Guillen appeared in a Chevy commercial around the time of the crosstown series, rapping to their heart’s content. Guillen: “I’m a South Side guy.” Piniella: “I know, I can tell.” Guillen: “What’s that mean? You can go to hell [bleeped by a car horn].” Piniella: “Sparks will fly from our Cubbie bats.” Guillen: “You remind me of…