How quickly the baseball worm can turn. Just three years ago, Brian Sabean and Bruce Bochy were the toasts of San Francisco, two surefire Hall-of-Famers, Sabean as the architect of three World Series champions from 2010-2014, and Bochy as his manager. But with Farhan Zaidi moving north from the Dodgers and being ushered in last week as the Giants’ new head of baseball operations, Sabean, who still has one year left on his contract, has essentially been vaporized, nowhere to be seen. I’m told, however, that Sabean, 62, is not interested in retiring (too bad the Mets didn’t know that!) and is instead itching for one more challenge. Bochy, who also has one more year on his contract, has essentially been told he won’t be renewed after ’19. While Sabean’s Hall-of-Fame candidacy remains strong, Bochy, after losing 187 games these past two seasons, is suddenly an under.500 (1,926-1,944 .498 win. pct.) manager for his career. There is no manager in the Hall of Fame with a losing record.