The run didn't come on a hit with a runner in scoring position, so let's set some records, folks.
Again, this is a violation of lawful treaties. The Giants hold the Rockies to one run on three hits at AT&T Park; the Rockies score eight runs in the ninth inning of every game at Coors Field. That's the deal. Always and forever. It makes the hometown fans happy, There is no call for this sort of chicanery, and I'm not sure what the Rockies are trying to prove.
That written, it would have been advisable for the Giants to score more than a run.