What's the deal with this Phillies lineup experiment?

My antenna is officially up on the Phillies lineup experiment.

While yesterday’s reaction and news revolved around Bryce Harper exiting the game after a hit by pitch (he seems to be fine), I was focused on the lineup Rob Thomson put out to start the exhibition game.

Yet it wasn’t Trea Turner in the leadoff spot that caught my attention. That’s not news. We’ve known for weeks that the manager could be leaning toward that shift. It was who was directly behind him.

Actually, it was who wasn’t directly behind Turner in the order that had me scratching my head.