The Question: Which second-half storyline do you find most intriguing?

It seems like ages since we saw Major League Baseball, but the 30 teams are back on the field tonight. It's a little more than two months till October, and 12 days until the Non-Waiver Trade Deadline.

So we have a simple question for you: what story will you be watching most closely as the second half begins? Is it one of those close pennant races? Trade talk? Individual award races? What's the biggest story as the second half begins?