Doing a midseason prospect list is an exercise in managing hype and dealing with insufficient information. Half-seasons mean small sample sizes, and while I'm speaking to scouts on a daily basis, I'm often dealing with two or three looks instead of four or six. And then there is the information we don't have. So many of these players have earned midseason promotions, and that half-season at a new level will provide valuable information that for now we just have to do without. So, with the understanding that several changes between now and the official Top 101 in the offseason will take place, here's a snapshot of the Top 50 prospects in baseball. For eligibility purposes, players needed to still be in the minors as of July 1. Draftees from 2012 are not included.

Have a Kindle? Additional commentary on Kevin's Midseason Top 50 is available in The Call-Up 2012, our just-published midseason update to Baseball Prospectus 2012.

1. Jurickson Profar, SS, Rangers (Preseason #4)

2. Wil Myers, OF, Royals (Preseason #19)

3. Dylan Bundy, RHP, Orioles (Preseason #6)

4. Oscar Taveras, OF, Cardinals (Preseason #23)

5. Manny Machado, SS, Orioles (Preseason #8)

6. Taijuan Walker, RHP, Mariners (Preseason #14)

7. Francisco Lindor, SS, Indians (Preseason #17)

8. Travis d'Arnaud, C, Blue Jays (Preseason #16)

9. Nick Castellanos, 3B, Tigers (Preseason #71)

10. Billy Hamilton, SS, Reds (Preseason #22)

11. Mike Olt, 3B, Rangers (Preseason #45)

12. Gerrit Cole, RHP, Pirates (Preseason #9)

13. Jose Fernandez, RHP, Marlins (Preseason #80)

14. Zack Wheeler, RHP, Mets (Preseason #30)

15. Javier Baez, SS, Cubs (Preseason #66)

16. Julio Teheran, RHP, Braves (Preseason #5)

17. Miguel Sano, 3B, Twins (Preseason #12)

18. Archie Bradley, RHP, Diamondbacks (Preseason #37)

19. Tyler Skaggs, LHP, Diamondbacks (Preseason #21)

20. Jake Odorizzi, RHP, Royals (Preseason #47)

21. Bubba Starling, OF, Royals (Preseason #27)

22. Christian Yelich, OF, Marlins (Preseason #33)

23. Gary Sanchez, C, Yankees (Preseason #40)

24. Jorge Soler, OF, Cubs

25. Matt Harvey, RHP, Mets (Preseason #25)

26. Aaron Sanchez, RHP, Blue Jays

27. Danny Hultzen, LHP, Mariners (Preseason #35)

28. Jackie Bradley, OF, Red Sox

29. Shelby Miller, RHP, Cardinals (Preseason #10)

30. Jorge Bonifacio, OF, Royals

31. Austin Hedges, C, Padres (Preseason #94)

32. Jameson Taillon, RHP, Pirates (Preseason #13)

33. Matt Barnes, RHP, Red Sox

34. Kaleb Cowart, 3B, Angels

35. Jacob Turner, RHP, Marlins (Preseason #15)

36. Mason Williams, OF, Yankees (Preseason #99)

37. Luis Heredia, RHP, Pirates (Preseason #42)

38. Nolan Arenado, 3B, Rockies (Preseason #20)

39. Carlos Martinez, RHP, Cardinals (Preseason #31)

40. Jonathan Singleton, 1B, Astros (Preseason #73)

41. Daniel Norris, LHP, Blue Jays (Preseason #54)

42. Anthony Gose, OF, Blue Jays (Preseason #68)

43. Matt Adams, 1B, Cardinals (Preseason #69)

44. Rymer Liriano, OF, Padres (Preseason #52)

45. Anthony Rendon, 3B, Nationals (Preseason #26)

46. Trevor May, RHP, Phillies (Preseason #51)

47. Zach Lee, RHP, Dodgers (Preseason #70)

48. Chris Owings, SS, Diamondbacks

49. Matt Davidson, 3B, Diamondbacks

50. Dan Straily, RHP, Athletics