Keith Law released his mid-season Top 50 prospects today, and as always it's a point of conversation. It's the second major mid-season update to be released, following Baseball Prospectus, which named three Rays.
36. RHP Taylor Guerrieri
Guerrieri is all the way back from 2013 Tommy John surgery both in terms of stuff (low-to-mid-90s fastball with a curveball that shows plus) and control (has yet to walk more than one batter in any of his 10 outings of three to four innings), and he should be ready to move to Double-A soon and start to pitch deeper into games.