Funny you should ask:
Adam Kilgore @AdamKilgoreWP
Davey says if Espinosa continues his improvement hitting lefty, he'll probably be the full-time leadoff man when Werth gets back.
It would have to be a pretty significant improvement for me to feel good about this... but I guess we'll see. He certainly seems to have taken to the leadoff spot when he's gotten the start there against righties.