Born: April 5, 1993
Height: 5′ 9″
Weight: 180
Bats: Left
Throws: Left
How Acquired: Int’l Free Agent, 2011
Country: Dominican Republic
Agent: N/A


Rosario is an outfielder with a good arm, good speed and some power potential, despite his size.  He didn’t hit a great deal in his first one and a half years in the DSL, but the Pirates promoted him to the GCL in late July 2013.  It’s unusual to see mid-season promotions from the Latin American summer leagues, but the Pirates may have felt the GCL team needed an outfielder after Luis Urena was promoted to West Virginia.  He was on the old side for a Dominican prospect when he signed.

DSL:  226/349/378, 164 AB, 6 2B, 5 3B, 3 HR, 29 BB, 44 K, 6-15 SB

Rosario played center more or less regularly, recording ten assists.  He showed some power and drew a lot of walks, but had trouble making contact.

DSL:  200/333/360, 75 AB, 1 2B, 4 3B, 1 HR, 14 BB, 20 K, 3-4 SB
R:  178/260/178, 45 AB, 5 BB, 10 K, 2-3 SB

Rosario’s playing time decreased and he moved primarily to right, with the presence of Michael De La Cruz in center.  He didn’t hit as well and continued to walk and strike out at about the same rate.  The Pirates moved him up to the GCL after some promotions left the team short on outfielders.  He played some in both right and center, and did little offensively other than draw a few walks.

R:  301/383/480, 173 AB, 10 2B, 6 3B, 3 HR, 20 BB, 28 K, 3-8 SB

After doing little his first two years, Rosario suddenly started hitting in 2014.  In fact, he was the GCL team’s best hitter along with Tito Polo.  He was two years older than Polo, though, so it’s hard to say how much his stats mean.  Rosario opened the season as a backup, but thanks in part to Michael De La Cruz’ problems, he ended up playing slightly more in center than De La Cruz.  Rosario hit LHPs almost exactly the same as RHPs.

R+:  190/247/305, 200 AB, 7 2B, 2 3B, 4 HR, 11 BB, 40 K, 4-8 SB

Rosario turned 22 at the start of the 2015 season, but the Pirates sent him to Bristol, where he played regularly in left.  He struggled there, with his walk rate dropping by half and his K rate nearly doubling.  He did still show decent power.

R:  368/436/667, 117 AB, 8 2B, 6 3B, 5 HR, 14 BB, 18 K, 7-10 SB
R+:  238/340/357, 84 AB, 1 2B, 3 HR, 12 BB, 18 K, 4-7 SB

Oddly, the Pirates sent Rosario back to the GCL at the start of the season.  It was his fourth stint there, so at age 23 he was both much older and more experienced than most of the competition he was facing.  The move seemed to reflect the fact that the Pirates have been chronically short of rookie-level position players since adding an affiliate at Bristol.  They also have had a lot of Latin American signees struggle as their spending in that area has fallen farther and farther behind most other teams.  Anyway, Rosario hammered the less experienced pitchers he was facing and provided a large percentage of the offense on a GCL team that had a very unimpressive group of hitters.  The Pirates finally moved Rosario up to Bristol in early August and, although he didn’t hit well there, he did better than the previous year, with much better patience.  He spent most of his time at both levels playing right.

R+:  327/402/564, 128 AB, 7 2B, 2 3B, 5 HR, 13 BB, 27 K, 5-7 SB
A:  268/286/439, 41 AB, 1 2B, 2 HR, 1 BB, 10 K, 1-1 SB

To open the season, Rosario went back for his third stint at Bristol.  He continued to hit very well there and finally, in his sixth season of pro ball, made it to full season ball in late August.  He at least showed some power there.  Rosario played all three outfield spots at Bristol, but served only as a DH at West Virginia.

Rosario’s had an odd career, settling in quickly as an organizational player despite mostly hitting well after leaving the DSL.  He has just one season left before becoming a minor league free agent.

2018: Minor league contract
Signing Bonus: N/A
MiLB Debut: 2012
MLB Debut:
MiLB FA Eligible: 2018
MLB FA Eligible:
Rule 5 Eligible: 2016
Added to 40-Man:
Options Remaining: 3
MLB Service Time: 0.000
December 11, 2011: Signed by the Pittsburgh Pirates as an international free agent.