Fantasy Baseball Prospect Risers - Rookies to Stash and Top Performers for Week 2 (2026)

April 5, 2026

Jeremy's top fantasy baseball prospect risers, breakouts with big upside for Week 2 of 2026. He analyzes top MLB rookies and call-ups to stash who are surging.

Welcome to the Week 2 edition of the top prospect performers. In this weekly piece, we'll look at prospects who are performing exceptionally well as of late, who could be worth stashing or monitoring for fantasy purposes. One week of play isn't enough of a sample to make any 100% definitive claims, but there are plenty of prospects who are already off to very hot starts.

Last week's article featured Konnor Griffin, who was called up for his MLB debut on Friday after spending only one week at Triple-A. While not many prospects ever have as much upside as the Pirates' generational talent, there are still names to know who will likely matter for fantasy at some point this season. Bryce Eldridge and Robby Snelling were the other two featured in last week's piece, and they still make for solid stashes, but this week we'll be discussing three new players who could contribute in the majors this season.

Adding the right prospect right before or when they get promoted can be just what your team needs to make a push for the fantasy championship. Especially in deeper leagues, many prospects offer upside that is rarely ever just sitting around on your league's waiver wire. Without further ado, here are three hot starts who are making a case for an early promotion.

• Fantasy baseball draft kit
• Fantasy baseball rankings
• Team Sync platform and Draft Assistant
• Fantasy baseball mock draft simulator
• Fantasy baseball draft cheat sheets
• Fantasy baseball closer depth charts
• Fantasy baseball prospects

Sam Antonacci, 2B, Chicago White Sox

White Sox No. 9, Overall N/A

Sam Antonacci was not an extremely highly-regarded talent when he was drafted in the fifth round of the 2024 draft, but everything he has done since then has been nothing short of impressive. In his first full year in the minors in 2025, he slashed .291/.433/.409 with five home runs, 57 RBI, 78 runs, and 48 stolen bases in 116 games. He finished the year in Double-A, slashing .292/.435/.381 in 49 games. 

While he clearly didn’t hit for much power, he excelled at getting on base through exceptional plate discipline, striking out only 14.1% of the time and walking 13.3% of the time. He was a starter for Team Italy in the WBC this offseason and only tallied two hits in six games, but one was a home run, showing hope for some increased power potential. That was further backed up by two spring training home runs and his time spent in the Arizona Fall League before the WBC, where he hit three home runs with a .541 slugging percentage in 19 games. 

That power continued to shine once he started this year at Triple-A, as he homered in each of his first two games. Through six games this season, he is 8-for-24 with two home runs, four RBI, five runs, and four steals. Between the AZFL, WBC, spring training, and Triple-A, he has eight home runs in 40 games, which is more than he had all of last season. 

Sam Antonacci has homered in each of his first two Triple-A games...#WhiteSoxpic.twitter.com/I7foT4fO0X

— Eric Cross (@EricCrossMLB) March 29, 2026

He was primarily a second baseman last season, but also made appearances at third base, shortstop, and first base. So far in 2026, the White Sox have pushed him for even more versatility, as five of his six games have been in left field. They are clearly looking for ways to ensure he can be in the lineup as much as possible when they decide to eventually promote him, and it could be sooner rather than later if he continues to hit at his current rate.

He should have a high floor for a prospect thanks to his great bat-to-ball skills and discipline, and his aggressive baserunning and emerging pop would make him an enticing pick-up. Especially in deeper leagues with a middle-infield spot and not much available on the waiver wire, his future multi-position eligibility would especially come in handy. 

Verdict: Stash in AL-Only Leagues

Charlie Condon, 1B, Colorado Rockies

Rockies No. 2, Overall No. 66

Charlie Condon was the third overall pick in the 2024 draft and would have difference-making fantasy upside in Coors Field. He enjoyed a solid first year as a professional, slashing .268/.376/.444 with 14 home runs, 58 RBI, and 59 runs in 99 games in the minor leagues. The Rockies were clearly impressed, as they made it clear that he would have the chance to win their starting first base job in spring training.

He did just about everything he could, batting .385 with three home runs and four doubles this spring, but the job went to TJ Rumfield, who hit five homers. It makes sense to give Rumfield the shot first, since he is older with less prospect pedigree, but that doesn’t mean Condon will be stuck in the minors all season. The 22-year-old has gotten off to a hot start during his first Triple-A experience, going 7-for-18 to start 2026 with a two-homer game on March 28th. He offers elite max exit velocities and raw power, and would be worth an add in all leagues when he is promoted.

112.6 mph rocket for Top 100 prospect Charlie Condon's first Triple-A @ABQTopes homer!

Dating back to 2023, the @Rockies have hit just 4 home runs with a higher exit velocity. pic.twitter.com/p5VC9vlyPl

— MLB Pipeline (@MLBPipeline) March 28, 2026

Even if Rumfield continues to impress at first base, the Rockies currently have Edouard Julien and Troy Johnston starting games as the designated hitter, which is hardly a roadblock for the 66th-best-ranked prospect in baseball. If they thought he was good enough to compete for a job in spring, it shouldn't take too much subpar performance from that duo at DH before Colorado is ready to make the move. 

Verdict: Stash in NL-Only Leagues

Robert Gasser, SP, Milwaukee Brewers

Brewers No. 17, Overall N/A

Robert Gasser doesn’t have as quick a potential path to fantasy relevancy as the others in this list, but he did have one of the most dominant first weeks of anyone in the minors. In his first start at Triple-A, he pitched 5 ⅔ scoreless innings with 11 strikeouts against the Norfolk Tides. That was his second very good outing in a row, after he pitched six shutout innings in his last start of the spring. 

You’ll notice that he is very low on the Brewers’ ranked prospects list, and that’s mainly because there’s still a small sample showing how he’ll perform following Tommy John surgery. His last full season was 2023, where he posted a 3.79 ERA and 1.28 WHIP with a 28.0% strikeout rate in Triple-A. His performance was good enough to earn his promotion to the majors in 2024, where he made five starts for the Brewers, posting a 2.57 ERA and 1.04 WHIP through 28 innings. 

Unfortunately, he underwent Tommy John in the summer of that season, and didn’t make his return to the majors until the final weeks of September last year. The 26-year-old pitched 38 innings in Triple-A before the promotion, to the tune of a 2.37 ERA, 1.05 WHIP, and 27.7% strikeout rate.

Considering he was never considered a true can't miss prospect, dealt with a major injury, and is now about to turn 27 years old, 2026 is a make it or break it scenario for Gasser. His path to the rotation isn't the easiest, with Logan Henderson also in the minors and Quinn Priester working his way back from injury. However, it may not be as hard as it seems. Jacob Misiorowski is young and will likely have his innings monitored, Brandon Woodruff has a shaky injury history, and Chad Patrick, Brandon Sproat, and Kyle Harrison aren’t exactly proven commodities. 

I think it’s very likely Gasser gets his chance at some point this year, and he’s worth keeping an eye on until then. He’s not worth a stash at this point in any redraft leagues, but if he keeps dominating Triple-A, his price could drastically rise in dynasty formats.

Verdict: Monitor for now, likely to get MLB rotation shot at some point in 2026

LIKE ROTOBALLER?

CLICK HERE, ENTER ROTOBALLER.COM, THEN CHECK THE BOX

More Fantasy Baseball Prospects and Rookies