I bet Stone was loving Ricky single handedly killing the bottom of the first inning putting on a hit and run with a non contact guy (Grandal) and arguably your fastest and best base stealer on the team (Anderson) at first base.
So instead of putting your best defensive OF in the 9th, with a 2 run lead, Ricky decides to overthink again and leave Eloy out there playing for the tie (or more).... got it.
Ricky just said post game that was Engel's execution. (he gives guys the green light to make those types of decisions in an at bat. Said that they don't have to rely on a signal from him).