I'd rather just go by whole-season stat lines than try to parse hot streaks and such. Too much room to insert bias when you do that. For example, Villanueva had an OPS of .578 after 5/5, but is now up to .706. In the 29 PAs that rose his OPS 128 points: 21% K, 3% BB, 1 HR, .579 BABIP. Is he really performing any better? For his season totals, he doesn't have any blaring black holes like Baez's K rate. It's just a general pile of mediocrity, and mediocre AA stats is not a good sign for a hopeful MLB career. This is why I'm not ready to cast aside Villanueva. Horrible start, hot the past 10 days or so. That's why I'm saying that a stat line can drastically change this time of year, so it's really around the half when things start to stabilize.