Jonathan Mayo has his latest mock draft up. There are some notable mid-round changes.

12. Kansas City Royals: Kyle Gibson, RHP, University of Missori
Normally, the Royals would probably be ecstatic for Gibson to be available here and not just because it'd be a "backyard" pick. But Gibson had two straight starts of dropped velocity, throwing a reported 82-87 mph in his regional win last weekend. He was quoted as saying that it was just some forearm tightness caused by the long season. The alarm bells you're hearing are that baseball folk will make a quick leap from "forearm tightness" to an elbow problem. If he can get the medical question answered, this is a good spot for him. If not, he could keep sliding. As a backup, there was word that North Carolina high schooler Wil Myers had impressed recently in a workout.
Last week's projection: Tony Sanchez

13. Oakland A's: Tanner Scheppers, RHP, St. Paul Saints
Speaking of medical questions, whether the one about Sheppers' shoulder can be answered will determine where the big right-hander goes. He's thrown very well this spring and to most who have seen him, he looks just fine. What team doctors say is a different story and Scheppers is planning on meeting with some teams individually for examinations. Some teams have already passed on him, but the A's are still studying it carefully. Stuff-wise, he belongs higher.
Last week's projection: White

14. Texas Rangers: Shelby Miller, RHP, Brownwood HS, Texas
Last week, it appeared like Miller might go above this spot, leaving the Rangers with the option of taking Purke and dealing with that potential signability issue. It's not that Purke is completely out of the question, but as mentioned last week, the Rangers have been on Miller all along.
Last week's projection: Purke

15. Cleveland Indians: Eric Arnett, RHP, Indiana University
Without one of the better high school arms making it down here, it's looking like the college-pitcher angle will play well here. The Indians were at Arnett's regional start en force and they liked how the big right-hander competed. He's a good athlete with great makeup who will sign quickly, something that works in his favor.
Last week's projection: Brothers