11/12/2015 - Baseball Factory Select Training & Competition at Pirate City Justin is an athletic R/R MIF who showed well during his time in Pirate City. Offensively, this righty displays a balanced setup with patience, waiting for his pitch. Barrel delivery is level as he connects and works to drive the middle of the field. Relaxing his grip will allow for more bat whip with more pop off of the barrel. At SS, Justin hustles around the GB into a square fielding position. He makes the plays with soft hands, gathers well and gains ground toward his target with strong throws across the diamond. Continuing to develop his footwork/agility will help him to grow as a MIF. Rivera has upside with still a ton of time to develop (2020 grad).