Not just a backup shortstop, but a backup shortstop who was DFA by the Diamondbacks a few weeks earlier and picked up by San Diego. He pitched an inning for Arizona earlier in the season, but that went better for them- and wasn’t with the game on the line.
I watched every single pitch of this game. I was impressed by the fans who stayed for the whole thing, but shocked that so many of them seemed to stay in their assigned seats. There were maybe 2,000 people who stayed for all 18 innings, and many of them seemed to be in the upper deck(s).
I can’t imagine that the ushers wouldn’t let them sit field level when they stayed that long, so either the fans were content to hang out in the upper levels, or Petco has the worst ushers in the history of baseball.