Signed as an international free agent out of the Dominican Republic in 2013, Diaz has been with the Twins organization for four years now, yet it’s easy to forget he’s still only 20 years old. He has grown into a large, bulky frame with broad shoulders and a thick lower half. Diaz possesses light-tower power, however, work is needed to see that power come out in games more consistently. His hips don’t consistently clear fully, limiting his leverage and resulting in him rolling over balls that he should be driving. Diaz has quick hands and is strong enough to muscle balls to all fields (28 doubles), presently his over-the-fence pop is almost exclusively to pull side (nine home runs to right field, just one to left). He’s an aggressive hitter — he’s walked only 22 times in 456 plate appearances (5% BB rate), but he shows consistent contact ability for a younger power guy, as his strikeout rate is only 15.8%. Defensively, Diaz’s soft hands played well in the field at first base. He doesn’t move well laterally, but he will make the plays he needs to, and he can handle throw in the dirt.
There’s still some risk in the profile given his age, but, Diaz shows big upside, and Twins fans should be excited on what type of player he could become. Letting the lower half work more freely will allow him to tap into his raw power more consistently and expand it to all fields, making him a real threat in the middle of the order. Diaz hass a moderate-risk, Role 60 ceiling, with a Role 50 floor. Realistically, he should settle right in the middle, as a Role 55 first baseman with plus power potential.