Hold on, those Clayton Kershaw postseason demons are not completely exorcised. Yes, Kershaw was the winning pitcher in the NLCS clincher, but now comes the final piece. The previous Dodgers starting pitcher to win a World Series game was 29-year-old Orel Hershiser, who won two games in the 1988 World Series, two complete-game victories, carrying the Dodgers to their most recent title. It’s a much different era, but another 29-year-old Dodger ace, Kershaw, has to come up big for the Dodgers to beat the Astros in the World Series that begins Tuesday night at Dodger Stadium. “When you’ve accomplished everything he has as an individual and you look at the ultimate goal for any professional athlete is to win that championship,’’ Dodgers manager Dave Roberts said. “For him, yeah, that final piece to win a championship, for the only team he has known. That’s the final piece for him.’’ No one knows that better than Kershaw, who is 2-0 with a 3.63 ERA this postseason. “When we won in Chicago [in the NLCS], that was a pretty special moment for all of us, myself included,’’ Kershaw said Monday night. “Getting to say you’re going to the World Series is a pretty special thing. We’ve had a few days now to let that sink in and we’re not satisfied with that now. We got to celebrate and got to enjoy it, now it’s real. We’ve got four more games to win.’’