08/11/2020 - All-In Membership - Trenton, NJ Matias is a crafty lefty who throws strikes. On the mound, this lefty has a 3-pitch mix coming from a low 3/4 arm slot and loose/free arm action. He has smooth separation and repeats his delivery well. He works to keep the ball down in the zone which will result in GB outs. FB ranges from 67-70 mph while showing good arm-side run as he commands it to both sides of the plate. Curveball has 2/8 shape - 59-61 mph. Continuing to develop his off-speed will help to improve overall effectiveness on the mound. As a hitter, this lefty has a tall/open stance with patience. He tracks pitches into the zone, whips the barrel with speed and connects, driving the ball to all parts of the field. Striding more square while engaging/driving his lower 1/2 will help to increase pop off of the barrel. Only a 2023 grad - Diaz has skills with still time to develop to get to where he wants to be.