3 Impact Fantasy Baseball Prospects To Stash - Didier Fuentes, Robby Snelling, Colt Emerson

April 21, 2026

Three top fantasy baseball prospects - Didier Fuentes, Robby Snelling, Colt Emerson - that can make big impacts. These MLB prospects are waiver wire pickups or stashes.

Targeting high-impact prospects can provide you with league-winning upside. Managers who opted to stash players like Nick Kurtz ahead of his MLB debut last summer were rewarded with a top-15 hitter.

In this piece, we will look at three high-upside prospects who are on the verge of earning the call to the big leagues.

Should fantasy managers stash these high-end prospects? Let's dive in!

Didier Fuentes, SP, Atlanta Braves

Current Level: AAA
Availability: 10% rostered
2026 AAA Stats: 16 2/3 IP, 2.16 ERA, 0.84 WHIP, 20 SO, 6 BB

Sliding into the No. 2 spot is an Atlanta Braves pitcher who is knocking on the MLB doorstep. While his path to a call-up is clearer than Tolle's, the Boston left-hander possesses more raw upside, giving him the slight edge on our list.

Fuentes actually broke camp with the Braves but was kept in the bullpen as a long reliever before being sent to Triple-A to build up his workload. In his lone MLB appearance this season, Fuentes logged four innings with two hits, one earned run, and 4:1 K:BB against the Kansas City Royals.

However, since being optioned to Triple-A Gwinnett, Fuentes has not only impressed as a starter, but has seen his workload drastically improve, suggesting the Braves view him as a long-term starter. After logging a short 3 2/3 innings in his Triple-A debut, Fuentes has tossed at least six innings in back-to-back games.

On April 8, Fuentes logged six innings with only two hits and eight strikeouts against Nashville. In his most recent appearance, facing Triple-A Memphis, Fuentes allowed four runs, but was able to hit the seven-inning mark for the first time this season.

The 20-year-old had a short stint with the Braves as a starter in 2025 but struggled, holding a 13.85 ERA over his first four MLB games. However, given his steady progress at Triple-A and past minor-league production, the young right-hander was clearly overmatched in his debut.

With the Braves lacking major depth at the back-end of their rotation, Fuentes may only need one more start at Triple-A to prove he is ready to take on a full starter's workload. His raw skill has improved greatly, and he should look far more comfortable in his second opportunity as an MLB starter.

-Written by Andy Smith

Robby Snelling, SP, Miami Marlins

Current Level: AAA
Availability: 5% rostered
2025 AAA Stats: 19 IP, 1.89 ERA, 0.95 WHIP, 31 SO, 9 BB

Even though Snelling has moved down the stash list, he has continued to enjoy elite production at Triple-A and remains on the verge of his MLB debut. In his most recent outing on April 10, the southpaw racked up 12 punchouts facing Triple-A Norfolk. In those things, Snelling allowed just two hits, and our walks over five shutout frames.

Overall, the Miami left-hander has looked quite sharp through his first three games, logging 13 innings to the tune of a 2.77 ERA, 1.15 WHIP, and a 22:8 K:BB. Snelling was given an opportunity to win a starting job in spring training, but fell short in the competition as Max Meyer was fully healthy, and Chris Paddack was given the nod for the final starting job.

Snelling has looked more than comfortable since making his Triple-A debut during the second half of the 2025 campaign and has proven he is more than ready to join Miami. During his first stint at Triple-A (63 2/3 innings), the left-hander posted a 1.27 ERA, 0.99 WHIP, with an 81:17 K:BB. The southpaw opened the 2025 campaign with Double-A and enjoyed far less success, posting a 3.61 ERA with a 1.22 WHIP over 72 1/3 frames.

The current No. 5 starter, Janson Junk, is coming off the worst outing of his young season as he surrendered five runs (four earned) against the Tigers on April 11. Paddack has not fared much better, carrying a 5.59 ERA over his first four appearances (19 1/3 innings).

While his path to the majors remains clear, Snelling may have to wait for no injury as the Marlins appear to be in favor of keeping him in the minor leagues for the time being.

SNELLING BEE🐝 12 Strike outs in just 5 innings for Robby Snelling pic.twitter.com/Hc1Bs0TYzT

— Jacksonville Jumbo Shrimp (@JaxShrimp) April 11, 2026

- Written by Andy Smith

Colt Emerson, SS, Seattle Mariners

Current Level: AAA
Availability: 5% rostered
2026 AAA Stats: 18 G, .258/.361/.452, 6 2B, 2 HR, 6 SB

Colt Emerson starts the Triple-A season with a homer.pic.twitter.com/rZqLRDdlun

— Eric Cross (@EricCrossMLB) March 27, 2026

Mariners' general manager Jerry Dipoto publicly stated that Emerson is getting close to a promotion. This is a polished hitter who is currently slashing .255/.333/.392 with one home run and three stolen bases in 58 plate appearances at Triple-A. While the 31.0% strikeout rate is discouraging, remember that he put up a 22.2 K% in Triple-A last year, plus a sub-20 K% in both Single-A and Double-A.

It would make sense for the M's to call up Emerson soon. For one, the team signed him to an eight-year, $95 million extension, so they should see what they have in their young infielder. Secondly, at the time of this article, Seattle has an 8-11 record. With Cal Raleigh, Julio Rodriguez, and Josh Naylor struggling at the plate, Emerson could be the spark that the team needs.

On top of that, Cole Young has cooled off a bit, slashing .215/.311/.369 with two homers in 74 plate appearances. That gives the Mariners the option to send Young down and replace him with Emerson at second base.

In any case, it's only a matter of time before Emerson is up. Once that happens, there's a good chance that he can produce at a 15/15 pace with a rock-solid batting average due to his strong plate discipline. Make sure to stash Emerson before your league mates get him.

- Written by Frank Ammirante

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: Noah Schultz (CHW), Sam Antonacci (CHW), Ryan Ward (LAD)

Promoted This Week: Kendry Rojas (MIN)

Honorable Mentions (Hitters): Lazaro Montes (SEA), Harry Ford (WAS), Ryan Clifford (NYM), Kemp Alderman (MIA), Esmerlyn Valdez (PIT), Gabriel Gonzalez (MIN), Zac Veen (COL), Deyvison De Los Santos (MIA), Hector Rodriguez (CIN), Michael Arroyo (SEA), Pedro Ramirez (CHC), Blaze Jordan (STL), Luis Lara (MIL), Jacob Melton (TBR)

Honorable Mentions (Pitchers): Gage Jump (ATH), Carlos Lagrange (NYY), Elmer Rodriguez (NYY), Hagen Smith (CHW), Jaxon Wiggins (CHC), Trey Gibson (BAL), Brody Hopkins (TBR)

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:

Who Should I Pickup?

Roto Points

Compare up to four players and we'll tell you who to pickup...

Who To Pickup?

Reset

Choose From The Top Ranked Players

Overall

C

1B

2B

3B

SS

OF

SP

RP

Popular Searches

Overall

C

1B

2B

3B

SS

OF

SP

RP

2026 Player Decisions. Looking to pick up someone else instead? Today's focus is on specific players like Brad Keller, Jorge Soler, Mickey Moniak, Dillon Dingler, Justin Crawford, Didier Fuentes, Colt Emerson, Robby Snelling. 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 Brad Keller, Jorge Soler, Mickey Moniak, Dillon Dingler, Justin Crawford, Didier Fuentes, Colt Emerson, Robby Snelling:

More Fantasy Baseball Analysis