Who Should Move Up a Level?

It's always a sketchy proposition to move prospects too quickly through the system. However, I feel it's a bad idea to leave a guy loitering in too low a level where they have nothing left to prove. Here's my take on a few guys who could be looked at:

• It sounds hard to believe, but Justin Upton could get a call after a few more at-bats. I realize that 63 ABs is a small sample size, but after only 126 in the high-A California league, he's batting .349/.414/.825 for Mobile of the AA Southern league. Yeah....he's slugging .825. He has two more home runs in exactly half his A ball at-bats. The only troubling peripheral is his K/BB ratio, which sits at 18 to 4. That could be the result of seeing better breaking balls in a higher level, and possible justification for leaving him there for the rest of the season. It's not like he's facing elite pitching prospects either; at first glance, Gio Gonzalez is the best prospect in that league.
• Cameron Maybin moved from the low-A Midwest League, where he produced, to the high-A Florida State League, where he continues to produce, to the tune of a .311/.428/.486 line. Certainly not Uptonian, but similar to Upton's numbers at the same level before his call-up. Remember, after Maybin and Upton's relative numbers in their first professional season last year, many were suggesting that Cameron may be the better prospect, despite the $2.5 millionish signing bonus discrepancy between the two of them. The (only?) knock on Maybin thusfar has been his strikeouts, and that has so far held true this year. His 58 K's are good for fourth in the FSL.
• Rounding out the trifecta of stud OFers drafted in 2006, we turn to Jay Bruce. Reds fans are orgasmic about their toolsy farmhand (lolz), and with good reason. He's mashing in the same league as Maybin. At .322/.374/.590, he has the best slugging percentage in the Florida State League. He walks less and strikes out almost as much as Maybin, but his power numbers speak for themselves. It should also be noted that the FSL has some pretty good pitching talent, including the Yankees' Ian Kennedy, the Devil Rays' Jacob McGee and Wade Davis, and Notre Dame's The Great Jeff Samardzija (mild sarcasm).
• Catching prospects are fun. The Rangers' Taylor Teagarden is making a case in the California League to join Justin Upton in AA. He was presumably hurt last year, as he only got 20 ABs in the Arizona League, but he sports an OPS of 1.169 with 10 home runs. I don't know, is that good for a catcher? Over at MotownSports he had been discussed in the past as a complement to Mark Texeira in a trade to the Tigers. I don't think he's a candidate to be moved any time soon.
  

Those are four position guys I thought I would throw out there. Obviously there are more, and as much fun as that was, I might have to revisit it in the coming days.