The BP list also linked to a couple of scouting reports from Ethan Purser. Conclusions below, sub to BP for the full reports
Lorenzen:Stephenson is a special arm, one with the potential to have two high-end pitches with the fastball and curveball. Along with the below-average changeup, the command profile is the bugaboo currently and will very likely be an issue going forward. It's easy to see the enormous potential in the arsenal, but in this outing, Stephenson looked the part of a mid-rotation starter who flashes front-of-the-rotation stuff but lacks the command profile to anchor a rotation. Though he's currently in Double-A, Stephenson needs a good bit of time to develop and refine his arsenal. An appearance at the highest level in the latter part of 2015 would not be a surprise with a shot at a rotation spot the following season fully in his sights.
He also did a report on Lively:Previously billed as a bullpen candidate due to the lack of a playable changeup and a funky delivery, Lorenzen has made huge strides across the board this season, and after this start, I believe in Lorenzen as a starting pitcher going forward. He showed a rounded four-pitch arsenal, three of which could be used as swing-and-miss/weak-contact offerings at the highest level. The command profile will never be above-average, and despite some mechanical red flags, Lorenzen has top-of-the-charts athleticism and should be able to repeat his delivery in a manner that would be conducive to average command. The stuff is electric and he will likely tease with more, but Lorenzen should settle in as a solid mid-rotation starter, a huge developmental win for the Reds.
Lively has good stuff across the board and, perhaps more importantly, shows good pitchability with realistic room for growth in this department. He goes into at-bats with a plan, executes, and pitches with major confidence, wanting to shove the fastball down hitters' throats. The fastball, while not a crazy weapon in terms of pure velocity, plays up due to its sneakiness and gives the pitcher a weapon going forward. The secondary arsenal is highlighted by the potential above-average slider, and while the curveball and changeup only project to average at the highest level, Lively should be able to deploy these pitches with confidence and keep hitters guessing with a few minor refinements. Overall, Lively looks like a good bet to blossom into a mid-rotation workhorse, a great outcome from a fourth-round selection. He should be ready sometime in 2015.