One thing it does is force an infielder to decide which base the relay goes to. If its going to be close at home, you might steal a run by having the relay go to third instead.
I don't know if there was a play at the plate or not
Just so we're all clear, Vazquez has an OPS 80 some points below Kepler.
I realize it's at catcher, and offense is hard to find, but so far the Vazquez addition has been pretty iffy.