Welcome to Volume Six of PARScards for 2026! This one’s a couple of days late, and it’s going to be a departure from the typical type of prospect we look at.
This week, we have the unheralded and largely unknown Hemmanuel Rosario of the Astros. Let’s dig in.
Background
Humor me for a minute. This may be the first and last time you hear about Hemmanuel Rosario. I’m having a bit of a rough patch in my recovery from spinal surgery, and instead of skipping this week’s PARScard, I decided to give Hemmanuel the spotlight. He’s someone who I’ve been wondering about since I stumbled upon his profile, so we’re killing two birds with one stone. We get the weekly installment, and my curiosity is satisfied.
Every week, several dozen new players show up at each level on the already massive list, crying for attention. With literally thousands of mouths to feed, not everyone gets a second thought. So why Rosario? He was already on the High-A list, playing in 5 games in April (.316/.316/.632 with 2 home runs). At High-A alone, he was buried amongst 600 other names, and I obviously had no reason to look at his page for more than a quick second. And to start the season, there are so many players to look at, I’m moving a little faster through each player.
Then Rosario went on the IL, and re-emerged in June at the complex for rehab. As I do with every player, I open their FanGraphs page, and for many, this is the only time I will ever visit their page. I’m looking for their level-repetition factor—I have different penalties for stalling at a level, as this usually doesn’t bode well. Players repeating a level a third time lose over 12% of their final score. If there’s an injury, however, and a year is missed, there’s no penalty. The clock resets. We’re looking for stalled movement due to performance. A 25-year old at the complex is nearly always there on rehab assignment, and Rosario was no different. So I marked him as ‘rehab’, and removed him from the displayed CPX bats. However, since he was now one of a just dozen or so new players, I was moving a little less hurriedly, and I noticed something during my quick glance:
Dude was gone for four years. It caught my attention, as did his quick little 5-game stint in High-A. But, I had more names to get through, and moved on. And then last week, working on the new names at Double-A, there he was again. He played Saturday and Sunday, starting at DH, going 2-for-7 with a double and a 3-run home run. He hasn’t played since, but now I wanted to know who this guy was.
How’d We Get Here?
Rosario signed with the Yankees way back in 2017. A defense-oriented catcher from San Juan, Puerto Rico, he was with the Yankees for seven years, playing in five seasons, between ages 16-22. He never hit. Across roughly 95 games of affiliated ball he posted around a .500 OPS with 3 home runs and 98 strikeouts, typical of an org-depth catcher kept around for bullpens and to fill organizational depth. He clearly was not a prospect on a development track. Rosario managed to escape rookie ball for a grand total of 7 ABs, two High-A games in 2019. Over these five seasons from 2017-2022, he did not eclipse 300 total plate appearances. In 2023, he was on the IL for the entire season, then released after his seventh season with the organization.
After a couple of years in the Puerto Rican Winter League for a whopping total of 20 plate appearances, Rosario latched on with the New Jersey Jackals of the independent Frontier League. Turns out, he actually wanted to play, and not just waste away as a teenager riding the pine. The 2024 Frontier League featured a handful of former big leaguers, most notably Chris Colabello—so we’re not talking premier competition here. They also have a team called the Florence Y’Alls, from Kentucky, so there’s that. In his one season with the Jackals, he batted .290/.350/.451, with 9 home runs and a 23.5% K-rate over 246 PAs. The next season, he signed with the Brockton Rox from Massachusetts, where he slashed a remarkably consistent .299/.354/.455 with 10 home runs and a 17.4% K-rate. This caught the eye of the Astros and earned him a minor-league deal heading into 2026.
April 14th, 2026, his first HR with a MLB-affiliate in four years
The Good
He’s a catcher who caught the eye of the Yankees nearly a decade ago, but is only now getting a chance. The bat is no longer a zero. His two indy-ball seasons showed offensive growth from a guy who had never hit, and it seems to be potentially carrying over into affiliated ball in 2026. In Asheville in April before the injury, he had multiple multi-hit games as well as home runs in back-to-back starts.
The 2nd HR April 16th—mans is not getting cheated, that’s for sure
After a five-game rehab with the FCL Astros, he laced a game-tying double in his Corpus Christi debut, and two games later hit his first Double-A home run (a three-run shot that proved to be the game-winner). FWIW, Double-A Corpus Christi plays at Whataburger Field in the Texas League, typically a pitcher-friendly venue.
The double came off 2%-owned Felix Arronde
The HR came off former 7th-overall pick Frank Mozzicato
The Bad
He’s 25 years old and just recently crossed the 1,000 plate appearance threshold. That’s generally not a good sign. He also hasn’t played since Sunday. Rosario likely has only gotten this far because catching depth is scarce, and Houston is especially dire at the position:
Looking at their PARS scores, the only true ‘green’ we see are two teenagers in rookie ball. Way down at the bottom you see the most recognizable name, Walker Janek, who hasn’t exactly panned out as of yet. He’s been down with injury, opening some time for people like Hemmanuel, who, funnily enough, isn’t even on Houston’s Roster Resource depth chart on Fangraphs. Janek is on a rehab assignment at the complex right now, so expect him to reclaim most of the catching duties at Double-A in short order.
The Verdict
I mean, look, Rosario is probably nothing. If it all comes together, maybe he carves out a couple of seasons as a backup catcher? That would be notable for someone who washed out with the Yankees in rookie ball and reinvented himself in indy ball. Catching is the thinnest position in almost every system. Teams constantly shuttle catchers up and down to cover injuries, all the while needing to give their pitching staffs a competent receiver. A 25-year-old who can actually catch and won’t embarrass himself with the stick is exactly the kind of player who moves up quickly out of need. Realistically, he stalls out in Triple-A, waiting as emergency catching depth one step away from the big leagues.
This is not someone I’m rostering… but he is someone I’m following and someone I’m rooting for. Leaving Puerto Rico and playing northeastern United States indy ball is not an easy transition. How did he survive in New Jersey in 2024? Rent wasn’t cheap then, and it certainly isn’t now. Indy ball is not known for paying much at all. I guess I’m kind of fascinated by the story of perseverance more than anything. If he collects a Major League paycheck one day, good for him. Who knows, maybe in 2027 he’ll have his Eduardo Valencia-type stamp on the history books.
And, you know I’ll have a proud papa moment.
Thanks for reading!
- Rick ✌🏼