LOS ANGELES — Eldridge Industries is an investment firm co-founded by a member of the Dodgers’ ownership group. The name can be found in seemingly every nook and cranny of Dodger Stadium: The new ribbon board, a permanent outfield sign, an ad behind home plate. And, until the very last batter the Giants brought to the plate Monday night, that was the only place the name Eldridge appeared on the field of play. Bryce Eldridge, the Giants’ top prospect , rode the pine for a second straight game until manager Tony Vitello sent him out with two outs in the ninth to the on-deck circle, where the would-be pinch-hitter watched Luis Arraez make their last out of a 9-3 romp over their archrivals. Giants top prospect Bryce Eldridge is struggling to find consistent at-bats under manager Tony Vitello. AP Afterward, Vitello affirmed Eldridge would be in the starting lineup the following night against Yoshinobu Yamamoto.…