Can you hear the drums, Fernando? Better yet, can you hit a home run, Fernando?  The San Diego Padres are 25 games into the season and arguably their biggest star, Fernando Tatis Jr., has yet to hit a home run.  Granted, that has hardly hurt the Padres, who have popped a half game ahead of the rival Los Angeles Dodgers atop the NL West and have baseball’s second-best record at 17-8 (.680), and Tatis has contributed in other ways.  Still, there’s plenty of angst surrounding Tatis, who at any given moment can be one of baseball’s most exciting players or one of its most confounding players. Both can happen in the same game. This is the deepest he’s gone into a season without homering.  The fan base probably will explode — figuratively, it’s hoped — when El Niño finally connects. This weekend would be a great time for Tatis to go yard.…