What Buster Posey took away from Bryce Eldridge’s late-season Giants call-up

SAN FRANCISCO — During the final homestand at Oracle Park, the lower deck was dotted with No. 78 jerseys, which will become a throwback next spring when Bryce Eldridge is given a much lower number. But those weren’t the only souvenirs from the 20-year-old’s two-week cameo in the big leagues. Eldridge picked up his first big league hit, and his mom even managed to snag a Matt Chapman foul ball while watching a game at Dodger Stadium. There were a lot of lessons that the organization’s top prospect will take away from September, too.“You’ve got to make adjustments at this level,” he said on the final day of the season. “I’m just excited that I got the opportunity. I love the fact that I got that out of the way going into next year. I know the things I’ve got to work on. I’m just excited and looking forward to next year and continuing to have a bigger role on this team.”The Giants never intended to have Eldridge get his feet wet in September, but when Dominic Smith went down with the team still fighting for a Wild Card spot, Buster Posey made the move in hopes that it could provide a jolt down the...