Grading The Prospects In The J.D. Martinez Trade

by Eric Stashin (aka The Rotoprofessor)

Yesterday we learned that J.D. Martinez was sent to Arizona for a three prospect package.  Martinez is a rental, which is going to limit the return, and helped Arizona to acquire him despite a relative lack of upside in their system.  That said, even in receiving just one of Arizona’s Top 10 prospects there is some intrigue heading to Detroit.  Let’s take a look:


Dawel Lugo – Third Baseman
Lugo is the best of the trio of prospects that the Tigers acquired, ranking as Arizona’s fourth best prospect prior to the season.  That said, there were concerns about his power potential and eye at the plate and that hasn’t changed much despite a strong performance at Double-A (.282, 7 HR, 43 RBI, 40 R, 1 SB).  He has added 21 doubles and 4 triples, while also reducing his groundball rate (45.3% in ’17), so there are at least signs of him tapping into the power.

While he’s kept his strikeouts down (13.8%), Lugo’s still not drawing many walks (5.7%) and that’s something that more advanced pitching may be able to take advantage of.  This matches up with the recent scouting report from Baseball America:

“Noted for his quick bat and excellent hands, Lugo is showing more patience this season and making pitchers come to him. His walk rate increased, but he still has work ahead to improve his approach and better tap into his above-average raw power.”

The upside is there, but there’s no guarantee.

Current Grade – B


Sergio Alcantara – Shortstop
A 21-year old playing at High-A, he’s hitting .279 with 3 HR and 11 SB over 340 AB.  He’s shown a solid approach (15.1% strikeout rate, 9.0% walk rate), though it’s obvious he’s not going to bring much power (especially listed at 5’9” and 168 lbs.) and needs to be more efficient on the bases (11-for-21 this season).  He’s better known for his glove, and while that could help him climb the ladder it’s hard to expect much more than a potential utility piece.

Current Grade – C


Jose King – Shortstop
The 18-year old is a bit of a wild card, and we don’t have much of a track record to go by (he hasn’t played above Rookie Ball).  That said the speed is there and he has the potential to develop, as per this scouting report from Baseball America:

“He has plus-plus speed and a short, a compact swing and good bat speed. His hitting approach is geared toward hitting line drives and keeping the ball on the ground. King shows quick hands and turns double plays well, but he has a friend fringe-average arm and is probably a better fit at second base.”

It will be interesting to see how he grows, but he has plenty of time and is worth monitoring.

Current Grade – C+


Sources –, Fangraphs, Baseball America

Make sure to check out our Mid-Season Top 50 Prospects by clicking here

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