Through The Prospect Porthole: Rodolfo Castro Is Impressing In Altoona

After speaking with Garett Mansfield from the Altoona Curve at length about the notable performances of Jason Martin and Jared Oliva at the alternative site, he brought up the somewhat unexpected play of Pirates Infield Prospect Rodolfo Castro. Mansfield noted that Castro has executed well at the plate, making regular hard contact, as well as looking comfortable at multiple positions in the field. All of this new information led me to revisit exactly where Castro came from and how he got here.

Back in February of 2019 Pittsburgh Pirates’ owner and chairman, Bob Nutting, spoke of his plans to expand the team’s already existing Baseball Academy in the Dominican Republic; doubling the facilities that were present at that time. The original project had cost the Pirates approximately $5 million dollars and to date had only produced a few Dominican-born prospects. Mr. Nutting was probably completely unaware that as he was making this announcement, the Pirates had a Dominican-born player, named Rodolfo Castro, in their system that was ready to break into the Pittsburgh Pirates top prospects list that coming summer.

On October 30, 2015 the Pittsburgh Pirates signed the 16-year-old shortstop during the international amateur free-agency period to a $150,000 contract. His first taste of professional baseball would come the following summer as the Pirates assigned him to the DSL Pirates (Pittsburgh’s Foreign Rookie Level Affiliate) of the Dominican Summer League. For being only 17 years old the 6’, 200 pound, switch-hitting shortstop performed very well.

In 56 games and 230 plate appearances the young Castro posted a slash line of .271/.360/.411, with 2 home runs and 20 extra base hits. The next year in three less games, Castro produced very similar numbers (.277/.344/479 with 6 homers and 22 extra base hits for the GCL Pirates (Pittsburgh’s Rookie Level Affiliate) in the Gulf Coast League. During this season Castro began to split his time defensively almost exactly three ways, between second base (15), third base (17) and shortstop (19). It was clear that his best positions were his natural SS and his adopted second base, but he performed well at third as well.

 After his second full winter off in a row, Castro joined the West Virginia Power (Pittsburgh’s former Low A Affiliate) in the South Atlantic League for the 2018 season. The consistency that he had exhibited in his first two years in the Pirate’s farm system did not continue through his third season. His strike out rate swelled to 26%, his walk rate fell to 6.8%, his batting average dropped to .231 and he only totaled 35 extra base hits in twice as many games as the previous two seasons. Another change was that for the first time in his career he played more games at another position, second base (89 Games) than he did at his drafted position, SS (12 Games). 

Due to his struggles during this season, as well as an stint on the IL at the end of July, with the Power it was determined that Castro would be assigned to Gigantes de Carolina of the Puerto Rican Winter League during the 2018-2019 off-season. Castro would only go on to appear in 8 games for Carolina that off-season and get 27 plate appearances. Unsurprisingly his numbers were not that impressive as he batted .269, with a .672 OPS and 12 strike outs.

Following this disappointing season it was not a shock when he was assigned to the Greensboro Grasshoppers (Pittsburgh’s Low A Affiliate beginning in 2019) of the South Atlantic League, his second year in a row at this level. However, this year was going to be a little different. For the first two months of the season, his strike out rate still hovered between 25% and 30%, but his batting average once again returned to around .263 and his power rebounded as he hit 13 home runs, accounting for a .901 OPS.

This resurgence led to a promotion to the Bradenton Marauders (Pittsburgh’s High A/Advanced Affiliate) of the Florida State League at the end of June. At this point Castro began to labor and slump more than he had in his entire career thus far, as he batted only .132/.192/.206 in the month of July and hit a only a single home run. It looked like things might not get better for the young Dominican. Luckily for Castro things did get better, a lot better. For the month of August he hit .299/.346/.443, with 2 homers and 10 extra base hits in only 26 games. It should be noted that in his short time in Bradenton he did play third base in 4 games, which has always been the position where he performed the worst. It is possible that this change in position and level threw off the rhythm that he found earlier in the season.

In spite of the bumps in the road that he experienced during the past two seasons, Rodolfo’s hard work was rewarded with a spot on the MLB Pipeline Pittsburgh Pirates Top 30 Prospects, landing at #22. As the off-season began he had been scheduled to play Toros Del Este of the Dominican Winter League, but was placed on the reserves list. Prior to this season I saw the possibility of him starting the year back in Bradenton due to age, the fact that there was a logjam at the middle infield position ahead of him in the organization and with the goals of reducing his strike out rate, increasing his walk rate and attempting to find a balance between hit/contact and power. The delay in the MLB season and the eventual cancellation of a MiLB one caused the plans for Castro to be re-evaluated. Much to my surprise the now #26 ranked Pirates prospect, was added to the player pool at the alternate site, but as previously stated he is taking every opportunity he can to make a good impression.

It is obvious that new General Manager Ben Cherington and staff saw something in Rodolfo Castro to make the decision that he should be a part of the squad in Altoona. Currently this choice appears to be strictly a developmental one as Castro has not participated in a contest above High A. However, I would not be shocked if this led to a more direct path to playing time for him at the MLB level in the coming years.

Published by Craig W. Toth

Former Contributing Author at, Co-Host of the Bucs in the Basement Podcast and life-long/diehard Pittsburgh Pirates Fan!

3 thoughts on “Through The Prospect Porthole: Rodolfo Castro Is Impressing In Altoona

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