One of the biggest mistakes dynasty managers can make is letting their Minor League roster grow stale. Holding onto the past value of prospects, instead of prioritizing new prospects, is a quick way to fall out of contention. This article is meant to help with that. The article below identifies several prospects who should be priority adds for dynasty managers in various league sizes. There are also some drop candidates listed who should see their roster rate decrease based on recent performances.
Using data from the Fantrax support team, we see an estimated 34% of all leagues on Fantrax are dynasty leagues. Another 30% of leagues are considered keeper formats. For this article, it is assumed that prospects are rostered in about 45% of leagues on Fantrax.
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Prospects That Need to be Rostered in All Dynasty Leagues
This section is reserved for players more than 20% rostered already, but less than the estimated 45% of leagues that roster prospects
Theo Gillen, OF, TBR
35% Rostered
If there are any dynasty leagues in which Theo Gillen is not rostered, that needs to change. The team’s first-round pick from 2024 is building on a strong 2025 with a breakout 2026. In High-A, Gillen has already shattered his career-high in home runs. Although his swing and approach are still designed to drive balls into the gaps, Gillen’s 6’2″ frame is helping to put him on pace for 38 home runs. Gillen has all of the tools dynasty managers seek out. He has raw power, game power, speed, plate discipline, and great contact skills. There is five-category upside in Gillen’s profile. He should be considered one of the game’s top dynasty prospects. Gillen ranked 17th in the most recent Prospect List update. There is no reason he should be sitting on any dynasty waiver wires.
Josiah Hartshorn, OF, CHC
29% Rostered
Unlike Gillen, Harsthorn was a little bit less known entering the season. A sixth-round pick, it took the Cubs $2M to pull Harsthorn away from his Texas A&M commitment. So far, Hartshorn seems to have been worth every penny of that. The switch-hitting outfielder is off to a strong start in Low-A. What stands out for Hartsthorn is his polish at the plate. He is walking 19.2% of the time while only striking out 15.3%. He also has a 82.9% contact rate. Rarely do 19-year-old prep outfielders jump right into professional baseball and do what Hartshorn is doing. However, there is more than just polish here. Hartshorn swings the bat well from both sides. The power from the left side is what really stands out. All five of Hartshorn’s home runs have come from that side, and there is legit 25+ homer upside here. Hartshorn is up to 29% rostered, but that number should continue to climb even higher. If you play in a shallower format where the hype of Hartshorn has not caught on, get in now before it is too late.
Prospects Dynasty Managers Should Add if Available
This section is reserved for prospects that are rostered in many formats but are less than 20% rostered in Fantrax Leagues
Josh Adamczewski, 2B/OF, MIL
16% Rostered
This roster rate baffles me. Adamczewski slashed .320/.420/.490 last season. He then went to the AFL where he hit .277 with four home runs in 20 games. Now, he has already set a career high in home runs with seven and is still batting .325. Adamczewski is an on-base machine with great contact skills, the ability to use the whole field, and great discipline that will translate to double-digit walk rates. The biggest question last year was how consistently he would get to his game power. This year, his HR/FB% is up at 28%, proving that he has 20+ power in his bat. Although not the fastest runner, Adamczewski has great baseball instincts and will steal 8-12 bases a season. He is already up to eight this year. Not the sexiest name without the flashiest tools, Adamczewski is still flying under the radar. He needs to be rostered in more leagues and should be a priority add in leagues where he is still available.
Cooper Flemming, SS, TBR
14% Rostered
Last month, Flemming was down in the deep prospects section of this article. His hot start has garnered more attention from dynasty managers and has pushed his roster rate up to 14%. This is still too low. Flemming has star potential that dynasty managers need to get in on early. His smooth and consistent left-handed swing produces plenty of line drives that he sprays all over the park. He controls the zone well, and uses every bit of his 6’3″ frame to drive mistakes over the fence. He has five homers, five steals, and could be a five-category contributor in the future. Flemming’s roster percentage is going to continue increasing as 2026 moves along. If there are dynasty managers who still have a chance to buy in on Flemming, now is the last chance.
Deep Dynasty Prospects to Add to Rosters and Watchlists
This section is reserved for prospects who are less than 5% rostered in Fantrax Leagues
Alirio Ferrebus, C/1B, PHI
3% Rostered
Alirio Ferrebus is a prospect that could rise significantly up ranking lists as the season moves along. Signed out of Venezuela back in 2023, Ferrebus has come into his own as a hitter this season. Across 38 games, Ferrebus is batting .343/.396/.571 with six home runs and five stolen bases. At 6’2″, Ferrebus is an intimidating presence in the box. He has a powerful right-handed swing that results in majestic home runs to his pull side. The biggest question mark remaining is his approach. Ferrebus is aggressive, and while that can work in his favor, it could become an issue against more experienced pitchers. Ferrebus is 20 years old and should find himself moving up to High-A shortly. For now, he is a watch-list player who is worth a spec-add in deeper formats. If he continues to perform at this high of a level, he will become a must-add prospect later this season.
Argenis Cayama, SP, SFG
5% Rostered
Argenis Cayama deserves more attention in the dynasty community. Cayama dominated the DSL in 2024 and the Complex League last season. While his 4.91 ERA is nothing special this year, his 33.8% strikeout rate and 5.3% should grab dynasty managers’ attention. Cayama seems to have made significant strides in improving his control this season. If not for one atrocious start (in which he gave up two homers, three walks, and seven runs in 0.2 innings), Cayama’s season stat line would look much different. At 19, Cayama is still working through the growing pains of becoming a pitcher instead of a thrower. However, the stuff stands out. Cayama features a mid-90s fastball that gets significant arm-side run. Off of that, he mixes in a changeup to keep lefties off balance and a slider that he will throw to both lefties and righties. The tight slider gets good two-plane break and is Cayama’s best offering. Cayama’s is a deep-league prospect worth adding to rosters.
Prospect Drop Options for Dynasty Managers
Shallow League Options
Prospects Rostered in More than 20% of Fantrax Leagues
Noble Meyer, SP, MIA
28% Rostered
Noble Meyer was supposed to be the prospect who came up alongside Thomas White to form a new one, two punch in Miami. While White is knocking on the door of the Major Leagues, Meyer has not pitched on a professional mound yet this season. Meyer is recovering from a shoulder injury, which has delayed his 2026 start. Outside of his health, Meyer’s performance has done nothing to inspire confidence from dynasty managers. He has yet to advance past High-A and finished 2025 with a 4.41 ERA. His fastball metrics have been underwhelming, his strikeout rates disappointing, and his control has been far from impressive. On top of that, Meyer has never thrown more than 74 innings in a season. A former 10th overall pick, there is still plenty of potential in Meyer’s profile, but there is no reason for him to be rostered in 28% of leagues. There are better options available, and it is time for dynasty managers to move on.
Ryan Clifford, OF/1B, NYM
33% Rostered
Dynasty managers in shallow leagues need to move on from Ryan Clifford. Clifford generated significant prospect hype after being traded to New York back in the Justin Verlander trade. Being in Triple-A and having shown the ability to hit 29 homers in a season, Clifford holds value still in deeper formats. However, there is no reason that Clifford is rostered in 33% of leagues (more than some of the names above him in this article. The issue with expectations here is that Clifford is unlikely to hit enough to earn everyday playing time. Clifford hit .228 in 2024, .237 in 2025, and is batting .216 this year. He has struggled with strikeouts for years and is striking out 36.1% of the time this year. Clifford also struggles against lefties, making a short-side platoon role a likely outcome. Clifford’s power gives him intrigue to those in deeper formats, or those who prioritize proximity. However, at 33% rostered, Clifford is a fine prospect to move on from in shallow dynasty formats.
Tyson Lewis, SS/3B, CIN
33% Rostered
Tyson Lewis still has a lot of potential. I am not even “anti-Lewis” as a prospect. The 51st overall pick from the 2024 draft is still only 20 years old and has the raw tools that should get dynasty managers excited. His projectable 6’1″ frame comes with a powerful left-handed swing that can drive balls out of the park. He is also a strong athlete with plus speed. The reason that Lewis lands on this list of shallow league cut options is his hit tool. Lewis hit .311 last year, but that came with a 29.1% strikeout rate and a contact rate of just 61% in Low-A. This year, things have not gotten better. Lewis is striking out over 35% of the time. He struggles with pitch recognition, is over-aggressive against breaking balls, and has poor contact skills. While Lewis’ profile is still flush with potential, the likelihood of success has plummeted. There are better options more widely available. He is a fine prospect to move on from in shallow leagues.
Deep League Options
Prospects rostered in less than 20% of Fantrax Leagues but more than 10%
Brailer Guerrero, OF, TBR
13% Rostered
Brailer Guerrero caught the eye of dynasty managers after his dominance at the Complex League in 2024. That, being in the Rays organization, and his 6’2″ projectable frame made him an easy prospect to buy into. Despite the hype, Guerrero has struggled to put together consistent offensive production since moving to full-season ball. Still 19 until June, Guerrero has time to develop. However, this is growing less likely. Guerrero’s hit tool remains raw. He strikes out too much and chases plenty. On top of that, Guerrero’s swing is not designed to drive the ball. He has a ground ball rate of 60% this year and over 50% for his career. Guerrero is also a below-average runner and is not stealing at the rate he did at the Complex League. There is a lot of pressure on his power to be a difference-making tool. Something his ground ball rate makes difficult to project. Guerrero is a fine prospect to drop and keep on watch lists instead.
Tekoah Roby, SP, STL
12% Rostered
Tekoah Roby’s roster rate reflects the prospect value he had prior to his elbow injury last season. Tommy John Surgery is expected to keep Roby sidelined until 2027. By the time he returns, Roby will be 25 years old and has thrown only 31.1 innings above Double-A. Roby has not topped 78 innings in a season since 2022, and at this point, it is fair to wonder if his long-term role will be coming out of the bullpen. When healthy, Roby has flashed intriguing stuff with a plus curveball that can generate plenty of whiffs. However, his past is littered with inconsistency and injuries. Dynasty managers should not be holding Roby for his past value, but should instead be prioritizing adding more up-and-coming prospects who could see their value skyrocket.
