MERVIN DEL ROSARIO
LEFT HANDED PITCHER
  Born: March 15, 1992
Height: 6’3″
Weight: 190
Bats: Left
Throws: Left
Signed: Int’l Free Agent, 2010
Country: Colombia
Agent:
N/A

WTM’S PIRATE PLAYER PROFILES

Del Rosario is a lefty with good size.  At the time they signed him, he reportedly could throw up to 93 mph.  Early in training camp in 2013 he was throwing only 83-84, although with a good curve.  He’s had exceptionally low K rates in the DSL.

2011
DSL:  6-2-2, 3.53 ERA, 1.35 WHIP, 51.0 IP, 3.5 BB/9, 3.4 K/9

Splitting his time between starting and closing, Del Rosario pitched effectively but with an extremely low K rate.

2012
DSL:  5-2-0, 2.66 ERA, 1.12 WHIP, 61.0 IP, 1.6 BB/9, 4.1 K/9

Pitching strictly as a starter, Del Rosario improved, mainly in the form of an extremely low walk rate, but he continued to fan very few hitters.

2013
R:  2-3-1, 5.87 ERA, 1.15 WHIP, 38.1 IP, 1.4 BB/9, 7.5 K/9

Del Rosario pitched mainly in relief in the GCL.  He was much more effective than his ERA indicates, although he did allow four HRs.  His K rate was much improved.

2014
R+:  1-5-0, 6.68 ERA, 1.64 WHIP, 32.1 IP, 4.2 BB/9, 6.1 K/9

The Pirates sent Del Rosario to Bristol, where he mostly pitched in relief but did make three starts.  Obviously, the numbers were poor.  Oddly, he pitched better in the three starts, allowing a .704 opponents’ OPS, as opposed to .923 in relief.  Right-handed hitters wore him out to the tune of a 314/383/524 line.

Del Rosario hasn’t done much to get on the prospect track, but LHPs generally got a lot of chances, especially ones with good size.  The Pirates could try him at Morgantown in 2015.

STATS
Baseball Reference–Minors
Fangraphs
MiLB.com
CONTRACT INFORMATION
2015: Minor league contract
PLAYER INFORMATION
Signing Bonus: $55,000
MiLB Debut: 2011
MLB Debut: N/A
MiLB FA Eligible: 2017
MLB FA Eligible: N/A
Rule 5 Eligible: 2015
Added to 40-Man: N/A
Options Remaining: 3
MLB Service Time: 0.000
TRANSACTIONS
July 15, 2010: Signed as an international free agent by the Pittsburgh Pirates.