"I don't think I've ever seen a young guy look that profound at home plate," Cubs manager Joe Maddon said. "Look at his walks to strikeouts. That's the part that tells me he can sustain — not necessarily this pace — but he can sustain it because he doesn't strike out. He will accept his walks. He doesn't expand the strike zone. He uses the whole field. He's a big guy with short movements to the ball. Pretty impressive."