SAN FRANCISCO — In one respect, Tony Vitello, who managed his first big league game on Wednesday, is very similar to all of the Giants fans who watched on Netflix. Vitello has been wildly successful in his chosen profession, but he said this spring that when it comes to keeping up with his favorite shows on streaming services, he’s reliant on family members. He doesn’t have many subscriptions of his own.“I just steal passwords from my family,” he said. Vitello didn’t need one to watch Wednesday’s season opener, and he probably won’t need to log in for a rewatch. His debut in the big leagues was a game the Giants would rather forget. They lost 7-0 to the New York Yankees, who shocked Logan Webb in the second inning and cruised from there. Vitello was known at Tennessee in part for fiery postgame press conferences, but there was no reason to be too fired up after this one. It was such a thorough dismantling by the Yankees that Vitello had about two hours to fully digest it before sitting down at a podium.“This is a half-painful, half-easy press conference to do, because it was pretty straight up,” he...