The trade deadline shuffled a lot of top farm system talent this year, and several of the fantasy baseball prospects who changed hands look like real dynasty additions right now. Here are five names worth adding, plus one player who benefits from a trade without being traded himself.
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5 Fantasy Baseball Prospects to Stash Now After the Trade Deadline (2026)
Zyhir Hope (OF – DET)
Hope was the centerpiece of the return in the deadline’s biggest pitching trade, headlining a package that also included two other well-regarded arms. He’s had a genuinely great minor league season, hitting .291 with 23 home runs, 18 stolen bases, and 87 RBI in roughly 94 games, all in under 400 at-bats. His exit velocity is strong, and while his stolen base totals could settle lower long-term given his bulkier, more muscled build, his power looks like it could keep climbing toward the 30-homer range. In his first look with his new organization, he already showed encouraging signs, drawing a walk and squaring up a hard-hit line drive. He’s historically been a strong fastball hitter who has developed real ability against secondary pitches too, profiling as a middle-of-the-order force.
From a fantasy lens, he looks like a top-25 overall prospect, and the move actually helps his outlook rather than hurts it. He was genuinely blocked behind a loaded, MLB-ready outfield with his old organization, while his new team offers a much clearer and faster path to real playing time, potentially forming a one-two punch with another well-regarded position player prospect already in the system. He should finish the season at Triple-A.
Anthony Eyanson (SP – BAL)
Some evaluators viewed Eyanson as the best prospect involved in the trade that brought his new team’s new starting catcher, even ahead of the more hyped names in that same package. His season has been outstanding: a 1.32 ERA across 16 outings and more than 68 innings, with 94 strikeouts and a WHIP well under 1.00. His fastball sits in the mid-90s, and he pairs it with a curveball, a splitter that was a major focus point on draft day, and a slider that’s become his primary strikeout weapon. His strikeout-minus-walk rate sits near an excellent 19 to 20%, and his whiff rate has been close to 40%, among the best marks in the minor leagues.
If he can keep commanding his fastball consistently, the shape and depth of his secondary arsenal should keep generating strikeouts at a high level. There’s real belief he could move through the system quickly, potentially factoring into a competitive roster relatively soon. This is a starting pitcher worth rostering in dynasty leagues without hesitation.
Kash Mayfield (SP – DET)
Mayfield was a genuinely surprising trade piece, moved as arguably the best prospect in a well-regarded farm system. His season numbers are strong: a 3.50 ERA with 62 strikeouts over 53 innings, though his WHIP runs a bit high. He’s not a big velocity arm, but he racks up strikeouts anyway, led by an outstanding changeup sitting in the low 80s with a whiff rate near 40%, paired with a slurve-ish breaking ball in the high 70s thrown from a deceptive, lower arm slot. His control and command stand out as real carrying traits for his overall profile.
Some early comparisons to a recent ace-level breakout arm from the same new organization feel like a stretch, but the pitchability here is real. His new team has a strong recent track record of developing exactly this kind of pitcher, and there’s real belief the coaching staff can help refine his secondary offerings even further. He projects as a potential upper-tier rotation piece down the line and should be viewed as roughly a top-100 overall fantasy prospect. If dynasty managers are souring on him because of the trade, this looks like a good buying window.
Henry Lalane (SP – SF)
LaLane was the headline return in a notable outfielder trade this deadline. He offers a genuine three-pitch mix, with a fastball sitting around 94 miles per hour setting up a slider and changeup that have both generated excellent chase and whiff rates. Injuries have been the main thing holding him back, keeping him at lower minor league levels longer than his talent would suggest. At 22 years old and listed at 6-foot-7, he’s been dominating overmatched competition, posting a sub-3.00 ERA on the season with his innings totals building steadily following a recent promotion.
He’s been a breakout pitching prospect in the industry’s eyes for close to two years now, with injuries repeatedly derailing the momentum, which is part of why he became available in a trade at all. His new organization offers a strong pitching development environment, and given how much development time he’s missed, a stint in the Arizona Fall League this offseason wouldn’t be surprising. He’s a genuine post-hype sleeper who hasn’t even reached Triple-A yet, someone dynasty managers were excited about a couple of years ago before mostly moving on. This trade is a buying opportunity, not a reason to sour on him.
Joshua Baez (OF – STL)
Baez wasn’t traded himself, but he’s a direct beneficiary of one, since a teammate blocking his path to the majors was just traded away, opening a clear everyday opportunity. This situation carries real echoes of a similar prospect-to-call-up story tracked closely last season that ultimately worked out well. The one real concern with Baez has been his strikeout rate, which has ranked poorly relative to his peers. His power numbers are excellent regardless, with 32 home runs and 18 stolen bases on the season, and a .251 batting average that could stand to improve a bit.
With the path now clear, this looks like the moment to see what he can do at the highest level, though it’s worth noting his organization could still delay the actual call-up briefly for roster-related reasons even with a spot theoretically open. If he does get the call and struggles with strikeouts early, that initial promotion hype could create a real window to sell if you already own him, or buy low shortly after if you don’t.
A Few More Dynasty Stashes Worth Watching
A handful of other prospects who changed hands at the deadline are worth a look in deeper dynasty leagues. One toolsy, power-driven hitter moved from Milwaukee to St. Louis and has been aggressively challenged with assignments similar to several other well-known power prospects in recent years. A promising young pitcher moved from Philadelphia to San Francisco with a sub-2.00 ERA at the lower minor league levels and is worth adding where available. And a very low-level international signee changed hands as a deeper dynasty stash, still likely playing in a rookie-level league but worth filing away for the future.
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