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Three top fantasy baseball prospects - Walker Jenkins, Seaver King, Karson Milbrandt - that can make big impacts. These MLB prospects are waiver wire pickups or stashes.
Targeting high-end prospects ahead of their call-up will not only save you a large portion of your FAAB budget but also provide you with a potential league-winning lottery ticket.
Below, we will spotlight three sneaky prospects who have begun to see their fantasy value increase and are quickly emerging as top stash candidates.
Should fantasy managers stash these high-end prospects? Let's dive in!
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Walker Jenkins, OF, Minnesota Twins
Current Level: AAA (on 7-day IL)
Availability: 5% rostered
2026 AAA Stats: 25 G, .256/.398/.389, 6 2B, 2 HR, 5 SB
Jenkins is a talented prospect, but he's taking some time to develop at Triple-A, where he's slashing .256/.396/.396 with two homers and five steals in 111 plate appearances. However, even with the lack of power, you have to be intrigued by the plate discipline, as highlighted by a 17.1% walk rate and a 16.2% strikeout rate.
This is a hitter who can eventually be a 25-25 threat at the big league level. After dealing with injuries, he's starting to look locked in at his rehab assignment.
Walker Jenkins hit a big home run in his first rehab game after missing the last month and a half.
JUST STAY HEALTHY.pic.twitter.com/huRH20ZDls
— Eric Cross (@EricCrossMLB) June 14, 2026
Even though this is a player you likely won't see until September, when rosters expand, he's the kind of elite prospect worth paying attention to. Let's hope that Jenkins can stay healthy because he can make a major impact. The talent is there.
-Written by Frank Ammirante
Seaver King, SS, Washington Nationals
Current Level: AAA
Availability: 5% rostered
2026 AAA Stats: 26 G, .290/.336/.495, 5 2B, 5 HR, 3 SB
King was recently called up to Triple-A. So far, he's showing that he belongs, slashing .290/.336/.496 with five home runs and three stolen bases in 116 plate appearances. This is a polished hitter with 30+ stolen base upside.
While Nasim Nunez provides some speed for the Nationals, they would be wise to see what they have in King sooner rather than later.
It's so nice seeing Seaver King (WSH) bounce back in 2026. The newly turned 23-year-old has posted a 166 wRC+ across both AA & AAA with a .344/.429/.581 slashline to pair with 6 HR & 6 bags. He's had to be more passive this season as a result of seeing fewer in-zone offerings. pic.twitter.com/ClzOEAbEFh
— Running From The OPS (@OPS_BASEBALL) May 26, 2026
While King doesn't have the same type of fantasy upside as others on this list, having a middle infielder who can provide a solid batting average while stealing some bases can be useful, especially in deeper leagues.
Keep a close eye on King to see if he continues to show improvement at the plate.
- Written by Frank Ammirante
Karson Milbrandt, SP, Miami Marlins
Current Level: AAA
Availability: 5% rostered
2026 AAA Stats: 15 IP, 1.20 ERA, 1.27 WHIP, 15 SO, 11 BB
The next name we will spotlight has recently moved up to Triple-A but has done far more than hold his own. As we have noted in previous editions of this column, Milbrandt was not projected to even compete for his MLB debut this season, given that he began the season at Double-A and he was toward the end of the line in a stacked pitching pipeline.
However, with Robby Snelling and Thomas White both on the shelf and slated to miss the remainder of the season, Milbrandt now sits as the "next best" option in this deep pitching system.
With Double-A, Milbrandt quickly put his name on the radar, tossing 47 innings of work with a 1.34 ERA and a 1.00 WHIP. During this nine-inning stint, Milbrandt struck out an eye-catching 90 hits and walked 17. Last summer, Milbrandt spent the majority of his time with High-A (where he posted a 3.26 ERA) before earning a brief two-start stint with Double-A.
Seeing him quickly adjust to Double-A hitters and showcase high-end strikeout potential moved him up to Triple-A Jacksonville much sooner than anticipated. Since joining the top club in the Miami pipeline, the No. 100-ranked prospect in the sport (per MLB.com) has looked even more dominant, which keeps him firmly in the top five.
Through his first two starts at Triple-A Jacksonville, Milbrandt has held an 0.82 ERA (one earned run) with an 8:6 K:BB. While he has allowed three hits in each of these two starts, he has limited the damage and continued to showcase his strikeout potential with a seven-punchout effort coming on June 13.
Lastly, like the two fellow prospects in the system, both Snelling and White were top stash options for much of the first half, given their clear path to the majors. Fortunately, Milbrandt has a very similar path to a near-future debut.
Currently, the Marlins have many of their "MLB" starters on the shelf. As of writing, Janson Junk and Eury Perez are both on the 15-day IL, leaving Tyler Phillips and Ryan Gusto as the depth arms in the staff.
While Milbrandt will need to showcase this production at Triple-A for a few more outings, he is quickly going from "second-half debut" to potential "pre-All-Star break" debut, given the team's injured rotation and his dominance at the top club.
Just Karson being Karson. 🤷♂️
In his Triple-A debut, Karson Milbrandt is through five scoreless innings on two hits, two walks and a strikeout.#Marlins pic.twitter.com/zKLqFOrBH0
— Fish On First Prospects (@FOFProspects) June 7, 2026
2026 Prospect Fantasy Baseball Redraft Stash Rankings
Who are the top fantasy baseball prospects to know? Check out our latest 2026 prospect fantasy baseball rankings which are updated regularly by Eric Cross:
Promoted Last Week: Braden Montgomery (CHW), Cole Carrigg (COL), Blaze Jordan (STL), Cooper Pratt (MIL), Denzer Guzman (LAA)
Honorable Mentions (Hitters): Lazaro Montes (SEA), Harry Ford (WAS), Ryan Clifford (NYM), Jacob Melton (TBR), Michael Arroyo (SEA), Jonathon Long (CHC), Joshua Kuroda-Grauer (ATH), Zach Ehrhard (LAD)
Honorable Mentions (Pitchers): Jack Wenninger (NYM), Hunter Barco (PIT), Owen Murphy (ATL), Quinn Mathews (STL), George Klassen (LAA)
| Rank | Player | Position | Team | ETA |
| 1 | Kaelen Culpepper | SS | Twins | June |
| 2 | Joshua Baez | OF | Cardinals | July |
| 3 | Kade Anderson | SP | Mariners | July |
| 4 | Charlie Condon | 1B | Rockies | July |
| 5 | River Ryan | SP | Dodgers | June |
| 6 | Max Clark | OF | Tigers | August |
| 7 | Ryan Waldschmidt | OF | Diamondbacks | July |
| 8 | Walker Jenkins | OF | Twins | August |
| 9 | James Tibbs III | OF | Dodgers | June |
| 10 | Karson Milbrandt | SP | Marlins | August |
| 11 | Luis Lara | OF | Brewers | June |
| 12 | Zac Veen | OF | Rockies | July |
| 13 | Hector Rodriguez | OF | Reds | August |
| 14 | Yohandy Morales | 1B/3B | Nationals | June |
| 15 | Hagen Smith | SP | White Sox | July |
| 16 | Jett Williams | SS/OF | Brewers | July |
| 17 | Ralphy Velazquez | 1B | Guardians | August |
| 18 | Jonah Tong | SP | Mets | July |
| 19 | Elmer Rodriguez | SP | Yankees | July |
| 20 | George Lombard Jr. | SS | Yankees | July |
| 21 | Jaxon Wiggins | SP | Cubs | July |
| 22 | Kemp Alderman | OF | Marlins | July |
| 23 | Abimelec Ortiz | 1B | Nationals | July |
| 24 | Brody Hopkins | SP | Rays | July |
| 25 | Wei-En Lin | SP | Athletics | August |
Who Should I Pickup Fantasy Baseball Tool
Trying to decide who to pick up off the waiver wire? Check the Who Should I Pickup tool:
Compare up to four players and we'll tell you who to pickup...
2026 Player Decisions. Looking to pick up someone else instead? Today's focus is on specific players like Walker Jenkins, Seaver King, Karson Milbrandt, Joshua Baez, Kaelen Culpepper, Matt McLain, Willi Castro, Bryce Eldridge, Cade Cavalli, Martin Perez, Blaze Jordan, Alejandro Kirk. These are some common searches for 2026 fantasy baseball waiver wire pickups.
Using The Tool. This is a simple tool but very powerful. The first step is to enter the player names that you want to compare. In the first box, search for the first player's name. In the second box, search for the second player's name. Compare up to four MLB players at once, and then click the Who To Pickup? button to see who the recommended waiver wire pickups are based on fantasy baseball rankings, projections, and more.
Improvements For Who Should I Pickup? You may have noticed, our Who Should I Pickup? tool has gotten an overhaul. We've added lots of great features for you to give you as much information as possible to win on the waiver wire in 2026. You'll see MLB player tiles with stats, projections, and a slick new interface. We hope you enjoy!
How It Works. Our RotoBaller staff puts together their weekly fantasy baseball waiver wire rankings and projections based on their research, and updates them constantly throughout the week. That information is the core data that is powering the decision-making in this tool. When you search for player names, you will only see those players who are ranked.
Popular Player Comparison Searches - Who To Pickup
Looking to pick up someone else instead? Below are some popular searches and comparisons from our Who To Pickup tool for 2026 for players like Walker Jenkins, Seaver King, Karson Milbrandt, Joshua Baez, Kaelen Culpepper, Matt McLain, Willi Castro, Bryce Eldridge, Cade Cavalli, Martin Perez, Blaze Jordan, Alejandro Kirk:
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