Farm System Reports Farm System Reports Archive - 2015 Seattle Mariners Top Prospects By mlbtopprospects Seattle Mariners Farm System Rank #21 heading into the 2015 season View the Full MLB Farm System Report View the Mariners Top 10 Prospect List: Seattle Mariners View the Mariners Top Prospect Cards: Here Get full scouting reports on all Mariners prospects and the Seattle Mariners Farm System with the Prospect Handbook available through Amazon. Seattle Mariners Farm System Over the last few years their system has rose to the top with the likes of Taijuan Walker, James Paxton and Mike Zunino. Recently it’s been these guys debuting in the majors and injuries that have really slowed the development. The Mariners had their hopes set on selecting Alex Jackson with the 6th overall pick in the 2014 draft. Jackson was a widley described as a stud hitting prospect perhaps the best in the draft. He hit .400 with 11 HR, 7 2B, 4 3B, 31 RBIs in 2014 which earned him Baseball America High School Player of the Year award. He also played catcher and outfield in high school but will be groomed as an OF in their system. In 2013 they selected D.J. Peterson with their top pick. Peterson came into his own last year having split time between High-A and Double-A. He finished the year with a .297 clip with 31 homers and 111 RBI. Of the 31 homers, 18 of which came during his time with the High Desert Mavericks. The Mavs home ballpark has the distinction of the “most homered ballpark in America”. No question about it 13 homers in Double-A is impressive. He has a good approach at the plate and a clear idea of what he is trying to accomplish. After Peterson and Jackson, Gabby Guerrero stands out as a potential power bat. “Great raw power but his approach needs work” that’s what a lot of scouts say about Guerrero who just so happens to be a nephew of Vlad. Go figure, lots of K’s, light-tower power must run the family. Pitching wise Edwin Diaz is their top prospect, Ryan Yarbrough, and Luiz Gohara are not that far behind him. All three of these guys are in the lower level of the system and will take a few years before we see them in Seattle.