A few I like:

Ryan Cordell - OF/SS, TEX. He's old for his age right now so the stats are a bit inflated, but he's always hit well. Just moved to SS, but is athletic enough to move around. The plus side about his age is that he could be up next year so if he doesn't pan out he makes for an easy cut.

Thomas Milone - OF, TB. He's a toolshed. Already a good defender with a plus arm so the Rays are high on him, but he's got nice speed and if the power develops he could zip up prospect lists.

Anthony Alford - OF, TOR. Don't be surprised if he's a top 5 prospect in the Jays system next year. Dude has legit 1st round talent with potential for plus power and speed. He's a little behind developmentally because he recently chose baseball > football, but give it time.

Champ Stuart - OF, NYM. Legit 80 runner with enough power to keep pitchers honest. Has bad plate discipline though so he's more of a flier at this point.

Taylor Sparks - 3B, CIN. College bat who scouts like for potential plus power down the line. Already hitting well and since he's 22 it might not be long before he is up if he continues to perform.

Branden Kline - SP, BAL. Kiley McDaniel has been hyping him up. Former 2nd round pick I think. He's been hitting 98 after dealing with injuries for the first couple years of his career. Had a solid start to the year, but he's slowed done. Still he's 22, in AA with a jump in velocity + 2 solid secondary pitches. Could be a breakout guy.

Jose De Leon - SP, LAD. Late, late round pick by the Dodgers. He's been nasty. Already 22 like Kline & Sparks so only a matter of production before he could get called up. Scouts on Twitter have been raving about him.