Throughout the 2018/2019 offseason, Marlin Maniac will devote one article each for every player who appeared in the Miami Marlins system for the 2018 season. Every. Single. Player. This is Part 161 of 286. For the first 100, click here.
The first wave of Miami Marlins prospects that we’re looking at include Brian Anderson, Lewis Brinson, and Trevor Richards. Wave two includes Brian Miller, Joe Dunand, Tristan Pompey, Jordan Yamamoto, and Jorge Guzman. Behind them in the “third wave” are Braxton Garrett, Trevor Rogers, Will Banfield, Luis Palacios, and maybe Dalvy Rosario. Congrats to those who caught the 30 Rock reference.
Dalvy Yeremy Rosario signed with the Miami Marlins one day after his 16th birthday, on July 23rd, 2016. A 6′, 160 lb. center fielder from Peravia, Dominican Republic, he didn’t see his first professional action until nearly two years later.
Coming out of Peravia, Rosario could be the first native of the town to advance further than the high-A level in major league affiliated baseball.
Rosario reported to the DSL Marlins, in the rookie-level Dominican Summer League on June 1st, 2018. In his first three games, he went five-for-12 with two doubles, two homers, and three RBI, while striking out only two times.
In a team-best-tying 67 appearances, Rosario collected 19 multi-hit games, including four times where he had three. His best amongst those was likely on June 13th, in a 15-5 victory over the DSL Athletics. That day, he batted third and collected two doubles and a home run, scoring four times and pushing his season average to .341.
Rosario led the club with 249 at bats, 279 plate appearances, 13 doubles, 42 RBI, 19 extra-base hits, 93 total bases, and four sacrifice flies. He also ranked near the top with 42 runs, four homers, and 26 stolen bases (in 29 attempts). Although he didn’t come close to pacing the team in walks, he still drew 22 bases-on-balls against a team-high 63 strikeouts.
Defensively, Rosario played at four positions, most capably in center field. In 295 1/3 innings ranging his domain, he racked up a .989 fielding percentage with only one error in 93 chances. He also collected four outfield assists. Rosario also played capably at second base, where he was perfect with 32 chances in 61 innings.
More from Marlins Prospects
- Miami Marlins: Checking in on prospects from the 2022 Arizona Fall League
- Miami Marlins: How top 2022 MLB Draft picks performed this season
- What’s wrong with Kahlil Watson?
- Miami Marlins: Farm System rankings part 2
- Miami Marlins: Farm System rankings part 1
Less impressively, Rosario finished with a .943 fielding percentage in 135 innings at third base and an .846 while manning shortstop for 52 frames.
Rosario completed the DSL season helping lead the Marlins to a 42-30 record and a third place finish in the division. He slashed a .257/.315/.373 line, showing ability to run, hit for average, and hit for power over a sustained time.
Rosario would do well with a promotion to begin the season with the Florida-based Gulf Coast League in 2019. Continued progression through the system would see him get his first shot at the Miami Marlins roster in 2024 or 2025.
Thanks for reading. Like us on Facebook, follow us on Twitter, and subscribe to our daily newsletter to keep up with the Miami Marlins.