Dynasty Baseball: 7 Under-the-Radar Prospect Risers

One of the biggest advantages in dynasty baseball isn’t landing elite prospects after they’ve already become household names—it’s identifying the next breakout before the rest of your league catches on.

Every season, a handful of prospects dramatically outperform expectations and force evaluators to rethink their rankings. Sometimes it’s a power surge, sometimes it’s improved plate discipline, and other times it’s simply a talented player putting together all of the tools that made scouts believe in them in the first place.

7 Under-the-Radar Prospect Risers

The seven prospects below aren’t consensus Top-100 names today, but each possesses the combination of upside, development, and organizational fit to make a significant jump in dynasty rankings over the second half of the season.

1. Tate Southisene, SS, Braves (A+)

Atlanta has built one of baseball’s strongest player development systems, particularly when it comes to athletic middle infielders. Southisene fits that mold perfectly. The switch-hitting shortstop combines loose athleticism with a projectable frame that should continue adding strength over the next few seasons.

What makes him especially intriguing for dynasty purposes is his well-rounded fantasy profile. He’s capable of contributing stolen bases today, while scouts believe there’s enough bat speed and physical projection for average game power to eventually develop. That’s the type of player who quietly climbs rankings once the production begins matching the tools.

Why he could soar: Premium athletes who stick at shortstop and begin tapping into more power often receive aggressive ranking bumps.

2. Joseph Sullivan, OF, Astros (AA)

Sullivan has quietly become one of Houston’s better offensive prospects despite flying under the radar nationally. His approach at the plate continues to improve, allowing his natural athleticism and developing power to play more consistently in games.

For fantasy managers, the appeal is obvious. Sullivan offers a chance to contribute in all five offensive categories rather than relying solely on one carrying tool. If he continues controlling the strike zone while adding more over-the-fence power, he could quickly transition from organizational sleeper to Top-100 prospect.

Why he could soar: Players capable of producing both home runs and stolen bases always attract dynasty attention once the underlying skills begin translating into production.

3. Braylon Doughty, RHP, Guardians (A+)

Few organizations develop pitchers as consistently as Cleveland, making any high-upside arm in their system worth monitoring. Doughty has begun showing the ingredients of a future impact starter with an improving fastball, quality secondary pitches, and a frame capable of handling additional velocity.

Perhaps the biggest reason for optimism is his developmental environment. The Guardians have repeatedly helped young pitchers improve command and maximize their arsenals. If Doughty follows that same path, his value could increase rapidly over the second half.

Why he could soar: Dynasty managers are always searching for the next Guardians pitching breakout before everyone else catches on.

4. Brandon Winokur, OF/SS, Twins (A+)

Winokur may possess one of the highest fantasy ceilings outside most Top-100 lists. Standing 6-foot-5 with impressive athleticism, he offers legitimate 25-30 home run potential while also possessing above-average speed.

The biggest question has always been the hit tool, but that’s also what creates the buying opportunity. If his swing decisions continue improving and he cuts down on empty swings, evaluators could begin viewing him as one of Minnesota’s premier position-player prospects.

Why he could soar: Prospects with true power-speed upside rarely remain underrated for very long.

5. Javier Mogollón, SS, White Sox (A)

Despite lacking prototypical size, Mogollón continues to outperform expectations offensively. His quick hands, surprising pop, and ability to impact games on the bases give him one of the more interesting fantasy profiles among young middle infielders.

The White Sox are still rebuilding their farm system, creating an opportunity for prospects like Mogollón to gain national recognition with another productive stretch. If the strikeout rate continues improving while maintaining his extra-base production, dynasty managers will start paying much closer attention.

Why he could soar: Middle infielders capable of producing both double-digit home runs and stolen bases always carry significant fantasy value.

6. Andrew Salas, SS, Marlins (Complex League)

Being the younger brother of Ethan Salas naturally creates expectations, but Andrew is beginning to establish his own identity as a prospect. His advanced bat-to-ball skills, baseball instincts, and mature approach have impressed evaluators despite his young age.

Unlike many teenage prospects, Salas already demonstrates an understanding of the strike zone that should allow him to move steadily through the minor leagues. As his frame fills out, additional gap power could begin turning into home run production.

Why he could soar: Young hitters with advanced contact skills often see rapid ranking gains once the physical development catches up.

7. Manuel Beltre, SS, Blue Jays (A+)

While Arjun Nimmala receives most of the attention in Toronto’s system, Beltre continues developing into one of the organization’s more complete young hitters. His advanced feel for contact, disciplined approach, and defensive ability provide an exceptionally high floor.

The remaining question is how much power eventually develops. If Beltre begins driving the baseball more consistently while maintaining his excellent contact skills, he’ll suddenly look much different to fantasy evaluators. Hit-over-power shortstops often receive substantial ranking bumps once they demonstrate average game power.

Why he could soar: Players with advanced hit tools tend to move quickly once they show even modest increases in power production.

Final Thoughts
Dynasty prospect rankings change faster than many fantasy managers realize. One productive month, a promotion to the next level, or a noticeable improvement in a player’s underlying tools can dramatically alter perceived value.

That’s exactly why targeting under-the-radar talent before the breakout occurs is one of the most profitable strategies in dynasty baseball. While no prospect is guaranteed to become the next big riser, each player on this list possesses the combination of talent, developmental upside, and opportunity to make a significant jump over the next several weeks.

If you’re looking to stay ahead of your league, these are the names I’d be trying to acquire before August arrives. Even if only two or three make the leap, the return on investment could pay dividends for years in dynasty formats.