This Newly Acquired Giants Prospect Could Be the Most Underrated Deadline Pickup

Ahead of the 2026 trade deadline, teams around the league had some difficult choices to make. For those in the race, they were expected to go out and buy themselves some weapons on the market who could help them down the stretch. However, for those on the outside looking in, it was the perfect time to capitalize on the desperation of those teams looking for an upper hand.

This is where the San Francisco Giants came in, as they walked away from the deadline as one of the biggest winners on the seller side. They were able to deal four of their key big leaguers to contending teams for a reasonable price, capitalizing on the market that took shape on deadline day.

More specifically, their deal that sent Luis Arraez and Caleb Killian to the Phillies opened deadline day and became the package to get the most attention. They landed Ramon Marquez in this deal, a future Just Baseball top-100 prospect and intriguing farmhand with one of the best changeups in baseball.

However, when the division opponent San Diego Padres came calling, the ever-active A.J. Preller made the Giants an offer that was too good to pass up. They’d send two prospects to San Francisco in exchange for former Cy Young Award winner Robbie Ray.

Although it was Ramon Marquez who caught the attention of most around the game, one of these two prospects has a chance to be the real winning acquisition of this year’s trade deadline.

Meet Joniel Hernandez

The two players moved in this deal were right-hander Miguel Mendez and shortstop Joniel Hernandez. The latter of these two prospects is the one that jumped out and grabbed my attention, as he’s someone I’ve had my eyes on ever since he signed with the San Diego Padres as a 16-year-old during the most recent international signing period.

At the time of signing his contract, Hernandez was viewed as one of the prized possessions of the international class. The Padres have had a ton of success in this scene as of late, landing top players such as Ethan Salas, Leo De Vries, and more on a seemingly yearly basis.

Hernandez, a native of Havana, Cuba, signed with the Padres for $1.4 million of their international bonus pool money, a significant chunk of change. However, this is a price far below what other top prospects have signed for previously, meaning this had the potential to be one of the best value moves made by Preller in the international scene.

For example, Salas and De Vries both signed for over $4 million in comparison, with Salas landing a record-setting figure of $5.6 million.

After signing with the Padres, Hernandez quickly made his professional debut in the Dominican Summer League as a 17-year-old. He wasted no time getting off on the right foot, as he’d go on to slash .316/.439/.519 with four homers and a 128 wRC+.

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Most notably, he showed advanced plate discipline, which is very encouraging given that many international prospects struggle in this department when first transitioning to professional baseball. Hernandez has walked more than he’s struck out this season, and he’s also kept his strikeout rate down near the 15% mark, a tremendous place to be, especially at 17 years old.

Hernandez was named to the DSL All-Star team, a much-deserved recognition for his fantastic play early on.

Of course, what came next was the news that he’d be heading to San Francisco in the Robbie Ray trade. Rather than taking some time to adjust to the new organization, Hernandez has found himself continuing to slug. Through his first four games in the organization, Hernandez has posted an OBP near .500, with a wRC+ above 160.

He even homered in his first game following the trade, which speaks even more to his adjustability.

Although it’s still early, every single sign is pointing toward the fact that Hernandez may be the next can’t-miss international prospect. The real challenge will come with the move stateside, which, at this pace, may not be much further into the future.

Breaking Down the Raw Tools

Naturally, with the encouraging results we’ve seen from Hernandez to this point, it’s easy to get excited about his future. With this in mind, it’s actually the raw tools that really make him an exciting prospect, as he’s already displaying a tremendous amount of maturity at the dish.

From the right side of the plate, Hernandez begins his setup in a more compact fashion than most around the league. His front foot is angled back toward the catcher, with his toe up off the ground through the entire setup. Hernandez’s hands follow the same compact nature, as they stay right next to his head with the barrel angling down.

As he begins his stride, he features a toe-tap as his hands get into the slot. It’s a swing that reminds me a lot of a mix between Brewers’ superstar prospect Jesus Made and the same type of barrel tip that Vladimir Guerrero Jr. uses to get his hands into the correct position. It’s loud bat speed, electric hands, and a tight finish that allows him to work through the baseball.

The swing is the first thing that really caught my eye when diving into his game. It’s the type of swing that very few teenagers can produce anywhere around the world, whether that’s stateside or on the international scene. Hernandez is built to lift the ball into gaps, hitting for decent power without sacrificing the contact skills needed to succeed in the lower levels.

With such quick hands, Hernandez should have an easier time handling velocity than most. He’ll rarely get beaten, instead using his twitchy nature to work smoothly, quickly, and efficiently. Even if he’s a hit-over-power player right now, I truly believe he can grow into above-average pop at the next level given what he’s showcased already.

Defensively, Hernandez possesses good instincts and range thanks to speed that’s comfortably above average. The same type of twitchiness and athleticism that makes him such a good, well-rounded hitter extends to his defensive game, making him a very solid shortstop. He certainly has the tools to stick at short long-term, but he has the range to handle an outfield position if need be or play an above-average corner-infield position.

These are the types of raw tools that are difficult to find, especially with the polish Hernandez has showcased to this point. He’s a rare case of a player with extremely interesting tools who’s already putting it together, meaning Hernandez is worth buying into now.

Oftentimes, when it comes to international prospects, the name of the game is buying in early before it’s too late. In Hernandez’s case, this idea could not be truer.

A Realistic and Bold Prediction for His Ceiling

Now that we’ve taken a closer look at his early positive numbers in the DSL and the raw tools that make him such a standout prospect, we’re left with one final question: What type of player could Hernandez be in the future?

I mentioned earlier that Hernandez’s swing reminded me a lot of a mix between Jesus Made and Vladimir Guerrero Jr., and I stand behind this. His early swings reminded me of Leo De Vries, too, which, when paired with his athleticism, becomes an even more potentially accurate comp.

While these players are all standout, blue-chip-type players, placing his ceiling this high is extremely bold. However, it’s not completely unrealistic, either. Hernandez has been with the Padres up until this point, who’ve excelled at developing players with similar tools to what he possesses.

Now, Hernandez is with the San Francisco Giants, who are beginning to churn out top international prospects at their own elite rate. Their recent success stories are Josuar Gonzalez and Luis Hernandez, who are both trending toward the very top of prospect lists around the industry.

With Hernandez possessing standout tools and developing in two organizations that have done well with players of his nature previously, I’m more confident in the lofty player comparisons for his future.

Hernandez is the type of talent that doesn’t come around often. With above-average tools in seemingly every facet of his game, the raw tools to back up the challenges he may face stateside, and a pair of organizations that have handled his development well so far, there’s every reason to buy into his profile before it’s too late.

With a strong showing stateside, don’t be surprised if he starts to work his way onto top-100 prospect lists around the industry in no time.