Episode 826
Lead prospect analyst Eric Longenhagen recently traveled from Phoenix to Baltimore to Washington DC to Chicago to Catasauqua to Hartford to Wilmington, not necessarily in that order. What he does in this episode of FanGraphs Audio is to recount his travels.

Don’t hesitate to direct pod-related correspondence to @cistulli on Twitter.

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Audio after the jump. (Approximately 1 hr 11 min play time.)

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The 2018 trade deadline has passed and, with it, dozens of prospects have begun a new journey toward the major league with a different organization. We have the prospects traded since the Manny Machado deal ranked below, with brief scouting snippets for each of them. Players highlighted in blue are not technically prospects, having exhausted rookie eligibility, but we felt they fell under our umbrella of evaluation anyway as they’ve spent a lot of time up and down in the minors this year. Plus, it’s just interesting to think about where they fit. Scouting info comes from both in-person looks and also a combination of scouts and front-office personnel to whom we are eternally grateful.

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The Mariners and Cardinals swapped relievers today, the latter sending RHP Sam Tuivailala to Seattle for prospect Seth Elledge. The deal gives Seattle a marginal bullpen upgrade in Tuivailala (probably over Casey Lawrence) for a stretch run that’s going to require them to continue winning close games. Every slightly better bullpen option is more meaningful in this situation than it is when looking at reliever value from a broader point of view. The deal is also a good fit for St. Louis, who acquires a comparable talent whose service-time calendar better aligns with their competitive schedule. Tuivailala is arbitration-eligible starting in 2020, when Elledge will probably be in his first or second year of big-league service.

Tuivailala is a fine middle reliever. He sits 93-96, will occasionally touch 99, and has two very average secondary offerings in an upper-80s cutter/slider and an upper-70s curveball. The Mariners have had success drafting low-ceiling, high-probability college relievers in the middle rounds of the last several drafts and quickly flipping them for mature big-league pieces on the margins. Elledge was the second pitcher Seattle traded from their 2017 draft class (JP Sears was sent to the Yankees for Nick Rumbelow last fall), which means Seattle’s 2017 draft has technically yielded the most subustantial big-league return in all of baseball right now.

Seth Elledge is a big-bodied, crossfire reliever with a mid-90s fastball and plus breaking ball. He was a 2017 fourth-round pick out of Dallas Baptist, a college that parades hard-throwing relievers into pro ball annually. He has a 54:14 strikeout-to-walk ratio in 38.1 innings. He might eventually be better than Tuivailala because the breaking ball is better. It’s reasonable to project a 2020 debut for Elledge, though has a non-zero chance to debut next year.

The Angels traded 31-year-old glove-first catcher Martin Maldonado to Houston yesterday in exchange for Astros 21-year-old LHP Patrick Sandoval. The Astros signed Sandoval away from a USC commitment with a $900,000 signing bonus in 2015. He was their 11th-round pick. He has tracked through the minors at an even pace, amassing 97 strikeouts in 88 innings split between Low- and High-A this season while also reducing his walk rate to half (4.3%) of what it was last year (8.5%).

Sandoval’s fastball sits 88-92 and will top out around 94. He can really spin a 12-6 curveball, one that’s above average when Sandoval is getting on top of it. Effectively, Sandoval has an almost perfectly vertical arm slot, but the way he gets there is somewhat odd and there’s some skepticism among scouts as to the sustainability of this year’s uptick in strike-throwing. There’s enough of a changeup here for continued development in a rotation and, if everything clicks, Sandoval will be a No. 4 or 5 starter. If not, he’s a lefty with a good breaking ball and a fine bullpen candidate. It’s a fair return for a backup catching rental.

Had Sandoval gone to USC, he’d have been draft eligible this year. Comparable college lefties in this year’s draft would have been Nationals second-rounder Tim Cate from UConn, and White Sox third-rounder, Mississippi State lefty Konnor Pilkington. Cate is a better athlete than Sandoval and the breaking ball is a little better. He signed for slot a 65th overall, $986,200. Pilkington’s stuff is closer to average across the board. I’d have him behind Sandoval just on stuff. He signed for $650,000, slightly below slot at pick No. 81. I think Sandoval would have fit somewhere in that range on draft day, which means the Astros properly valued him three years ago and used an 11th-round pick to acquire a future second- or third-round talent for second- or third-round money. It also means Sandoval probably got an equal or better bonus than he would have this year, and he’s further along the developmental path than most his age-appropriate peers from the 2018 collegiate draft class.

Cole Hamels has accumulated the third-most WAR among big-league lefties dating back to 2006. Last night, was traded for a fringe prospect. A 5.20 FIP, a $6 million buyout at the end of the year, and a relatively lengthy no-trade list all limited Hamels’ value on the trade market, and the Rangers received 2017 11th-rounder ($125,000 bonus) Rollie Lacy in their swap with the Cubs.

In Lacy, the Rangers acquired a 23-year-old righty who is performing in A-ball. He has K’d 94 hitters in 80.2 innings this year, but the scouting reports indicate lesser stuff than Lacy’s strikeout rate would otherwise indicate. He’s a sinker/slider righty (60% ground-ball rate this year, which is excellent relative to the big-league average of 43%) with some cross-body mechanical deception and a fringey changeup.

On stuff, Lacy looks like an up-and-down arm. His ability to generate ground balls and the way his delivery enables his stuff to play up are possible paths toward more than that.

Hawaiian LHP Kodi Medeiros was part of a high-risk 2014 Brewers draft class that also featured SS Jake Gatewood (who had elite raw power but also contact issues) and OF Monte HarrisonChristian Yelich). On Thursday, he was the centerpiece of two-prospect package traded to the Chicago White Sox in exchange for ageless reliever Joakim Soria.

Medeiros was a curious selection in the middle of the 2014 draft’s first round, as he had command issues and a low-slot delivery that made him vulnerable against right-handed hitters. The gap between where Medeiros was, developmentally, and where he’d eventually need to be in order to profile as a starter was much greater than is typical of a top-15 pick, even as far as high-school pitching is concerned.

After parts of four years in pro ball, Medeiros continues to have issues with strike-throwing efficiency and with getting right-handed batters out, so while he has been developed as a starter (which makes sense if you believe the extra reps help accelerate or improve pitch development), he still projects in relief. His fastball velocity is down beneath what it was when Medeiros was drafted, now residing in the 88-92 range. A move to the bullpen might reignite some of the fire that has been lost and, if it does, then Medeiros’s fastball, plus slider, and low arm slot mean he’ll be death to lefty hitters in late innings.

The White Sox also acquired 20-year-old righty Wilber Perez from the Brewers. Signed as a 19-year-old in July of last year, Perez pitched the rest of the summer in the DSL. He’s still down there and has a 47:13 strikeout-to-walk ratio in 40 innings this year. His fastball sits in the upper 80s and rarely crests 90, but he can manipulate its shape to have cut. Perez can spin a soft breaking ball, and there’s significant spin rate separation between his fastball and changeup, a favorable trait. He’s a fringe prospect in need of more velocity. There’s room on Perez’s frame for more weight, but most of these guys are relatively maxed out, physically, around age 22, so projecting heavily on a 20-year-old’s velo based purely on physical maturation seems excessive.

Notes on prospects from lead prospect analyst Eric Longenhagen. Read previous installments here.

Gabriel Maciel, CF, Arizona Diamondbacks (Profile)
Level: Low-A   Age: 19   Org Rank: 18   FV: 40
Line: 2-for-4, 2B

Notes
The 19-year-old Brazilian has hit in every July game in which he’s played and is riding an 18-game streak, including multi-hit games in eight of his past 10. Maciel was hitting .249/.336/.305 on July 1 and is now at .291/.367/.338. He’s a plus-plus running center fielder with very limited physicality, but he understands what his offensive approach has to be to reach base and he has played well-executed small-ball throughout his pro career. There’s risk that this style of hitting won’t play against better defenses and that Maciel winds up as a bench outfielder.

Dylan Cease, RHP, Chicago White Sox (Profile)
Level: Double-A   Age: 22   Org Rank: 9   FV: 45+
Line: 7 IP, 1 H, 1 BB, 12 K

Notes
This was the best start of Cease’s career. He has posted a 10% walk rate since being acquired by the White Sox, while big-league average is about 8%. Cease is a pretty strong candidate for late-blooming fastball command. He missed a year of development due to a surgery and will receive every opportunity to work with different coaches and orgs throughout his career as long as he throws as hard as he does. It might click at any time. But for now it’s realistic to assume that when Cease debuts in the next year or so he’ll probably be pitching with 40 control. Is there precedence for success among starting pitchers with a plus fastball, plus curveball, and a fringey collection of other stuff? Charlie Morton and German Marquez are two very encouraging examples, Sal Romano less so. Sean Newcomb looked like he’d have to be that guy but his changeup came along. It will take a pretty specific approach to pitching, but Cease should be fine with what he’s already working with.

Touki Toussaint, RHP, Atlanta Braves (Profile)
Level: Triple-A   Age: 22   Org Rank: 7   FV: 50
Line: 8 IP, 2 H, 4 BB, 0 R, 8 K

Notes
You could apply much of what I just said regarding Cease to Touki, but we’re higher on Touki than Cease, ranking-wise, because his curveball is better, he hasn’t had a surgery, and he is a level ahead of Cease at the same age.

Hans Crouse, RHP, Texas Rangers (Profile)
Level: Short-Season   Age: 19   Org Rank: 8   FV: 45
Line: 7 IP, 6 H, 0 BB, 0 R, 12 K

Notes
Crouse’s delivery looks weird and causes his fastball to play down a bit because he doesn’t get down the mound. While he had below-average fastball control when I saw him in the spring, he has just four walks combined in his past five starts for Spokane. Yet another plus fastball/breaking ball prospect with stuff nasty enough to overcome other issues.

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Here are my very brief thoughts on Jalen Beeks, who was acquired by Tampa Bay from Boston in exchange for Nathan Eovaldi:

Beeks was ranked 6th in a bad Red Sox system entering the year and received a 45 FV grade from us as we thought he had passable control and a deep enough pitch mix to start. He proceeded to dominate the International League and had accumulated 117 strikeouts in 87.1 innings at the time of the trade.

We still have a 45 FV on Beeks, who has a fringe fastball in the 89-93-mph range, an above-average curveball, and an average changeup and cutter. Finding some way for the fastball to play is of paramount importance to Beeks’ ability to start, and it’s probably going to take heavier in-zone use of his curveball to keep hitters from sitting on a relatively hittable fastball. Tampa Bay’s pitchers have used their fastballs less than all other big leagues teams aside from the Yankees, so this seems likely to occur. Beeks projects as a No. 4 or No. 5 starter, and because we’re talking about a lefty with a good breaking ball, his injury-independent floor is that of a good bullpen piece.

You could argue this was Boston’s best realistic trade chip as none of the other 45 FV prospects in the org have really performed this year, and 50 FV prospects Michael Chavis (PED suspension) and Jay Groome (Tommy John) have other issues impacting their value.

Notes on prospects from lead prospect analyst Eric Longenhagen. Read previous installments here.

Luis Rengifo, MIF, Los Angeles Angels (Profile)
Level: Triple-A   Age: 21   Org Rank: NR   FV: 45
Line: 3-for-5, 2 2B

Notes
Rengifo slipped through the cracks of our offseason team prospect lists, as he was traded from Tampa Bay to Los Angeles after we had finished the Angels’ writeup but before we had finished the Rays’. It’s turned into a fairly significant failure of process, as Rengifo has traveled three levels throughout the year, walking more than he has struck out while swiping 37 bases. Rengifo profiles as a max-effort utility guy who contributes in many subtle ways. Chone Figgins comps were being made before Rengifo was traded to the Angels and now seem more prescient — if perhaps a bit overzealous, as Rengifo doesn’t have that kind of elite speed.

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