The Giants have been playing baseball for 144 seasons, and they have never had a worse start to a campaign. On Sunday, when an extra-innings loss to the Rays dropped them to 13-21, they matched the worst start in franchise history that spans back to 1883, when the New York Gothams debuted in Major League Baseball. San Francisco split two games with the Padres and now sits at 14-22, already eight games back in the National League West. With a payroll of almost $200 million and a franchise icon in charge, this wasn’t supposed to be what happened to the Giants in 2026. A series of bad decisions has brought the franchise to this spot, and it was all avoidable. The problems begin with the guy Buster Posey bet the franchise on. Rafael Devers has disintegrated Devers is batting .219 with a .571 OPS through 36 games this season. | D. Ross Cameron-Imagn Images When the Giants landed Devers in a deal with the Red Sox last June, he was expected to be the franchise’s next great slugger.…