What it was like
There is a Bay Area transplant living three doors down from you in San Diego, and when the Giants come to town he wears the colors to Petco without apology - the right-field bleachers take on a whole different character during this series. This is the oldest rivalry in the NL West, thirty-plus years of two California clubs fighting over the same playoff real estate, playing each other more than any out-of-division opponent.
Late July at Petco is the stadium in full summer mode: weeknight sold-outs, the NL West standings close enough that three games directly move the pennant picture. The Giants travel with one of the most geographically concentrated and loyal away fan bases in baseball, which gives the whole series an edge a divisional midweek set usually lacks.
This one matters. Show up for it. The San Francisco Giants visit Petco Park on July 30.