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Chris's fantasy baseball prospects to stash list for Week 24 of 2025. His top MLB prospects and rookie sleepers to make fantasy impacts this year when called up.
Welcome, friends, to the 2025 MLB season, and my weekly article about fantasy baseball prospects to stash heading into Week 24. Who are the top prospects you need to know for redraft leagues? We are back on our hot streak of predicting prospects getting the call, with at least one player in 14 of the last 15 articles getting called up within the week of the article being published. Sal Stewart and Jac Caglianone made the show after the last article was posted, and we also had Carter Jensen get the call. Let's break down some new prospects to stash, such as Kristian Campbell, Brandon Sproat, J.J. Wetherholt, and JR Ritchie.
Winning in a fantasy baseball redraft league requires a nice blend of high-floor players and upside shots. While prospects present more risk in a one-year setting, such as a redraft league, they pay big dividends if they succeed. The reward could be huge if these players receive adequate playing time and perform well.
Throughout the season, there will be plenty of prospects who will get promoted and make an impact on their respective MLB teams and fantasy teams. Getting ahead of the curve on these players can pay huge dividends in terms of FAAB bids. You can save money and have your league mates question how you are already in on that player so far in advance. Here are this week's fantasy baseball prospects to stash. These players can make a significant impact in redraft leagues for the remainder of the 2025 season and are expected to debut in the major leagues soon.
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Kristian Campbell, INF/OF - Boston Red Sox
A week ago, I would have told you Campbell was likely to end the season in Triple-A as he continues to work on a swing change. Honestly, his swing got to the point where it looked very similar to what it did when he was drafted out of Georgia Tech in 2023. The swing change heading into 2024 is what unlocked a massive season for him.
Campbell has finally been getting things going at the plate. After an improbable rise through the minors last year, Campbell made the Opening Day roster for the Red Sox and looked pretty good to start the season. Pitchers adjusted to him and over his most recent 104 plate appearances with Boston, Campbell slashed a smooth .176/.279/.231 with just one home run and a 29 percent strikeout rate.
The demotion to Triple-A didn't do much good, either. Campbell struck out in 34 percent of plate appearances while slashing .186/.352/.300 in 20 games. Since the All-Star break, the numbers look much better, and after nearly hitting for the cycle earlier this week as he homered and drove in six runs, Campbell has a .297/.384/.484 slash with seven home runs in his last 40 games.
Campbell seems to have re-found his groove while also working through a rib injury and some swing adjustments. This is a pretty typical process for most prospects. For hitters, especially, a prospect comes up and looks the part, but eventually, pitchers adjust. The groundballs are still an issue, and Campbell probably needs a full offseason to reset and get his swing back to 2024 levels, but with Roman Anthony's injury and Boston in contention, Campbell could be called on to return to the Red Sox.
Brandon Sproat, RHP - New York Mets
After a massive ascent up prospect rankings in 2024, as Sproat was one of the biggest pitching prospect breakouts in the game, 2025 has been rough, at least until recently. Sproat turned the corner in late June due to some pitch mix changes, and the results have followed. Despite several blow-up starts, Sproat has a 2.44 ERA in 59 innings since June 28 with a 21 percent strikeout minus walk rate.
There have been some changes in the profile that led to the jump. Sproat has seen an uptick in velocity and a pitch mix change. Sproat has also moved a few inches toward the first base side of the rubber. Little changes can make all the difference.
Since that start late in June, Sproat has sat at 97.1 mph on his fastball, which is up from 95.8 previously. The whiff rate has jumped to 31 percent, an impressive number for a fastball. The changeup is sitting at a 36 percent whiff rate and exhibiting strong traits to complement the sinker.
Sproat is equally mixing his slider and sweeper, and both are missing bats at strong rates. A few changes have gone a long way for Sproat. We have seen Nolan McLean and Jonah Tong both get the call before Sproat, but his time is here. Earlier on Wednesday, Michael Mayer of Metzmerized Online reported that Sproat will be getting the call and is set to make his MLB debut on Sunday against the Cincinnati Reds.
J.J. Wetherholt, SS - St. Louis Cardinals
It seems like Wetherholt just keeps getting better and better. While he was good for most of the season, he has really taken things up a notch in Triple-A. In 177 trips to the plate with Memphis, Wetherholt has nine homers, a .322/.418/.597 slash and a 163 wRC+.
Wetherholt is smoking balls with an average exit velocity of 91 mph and has raised his 90th-percentile exit velocity on the season to 104 mph. While Wetherholt does not post super high-end exit velocities, he consistently squares up baseballs and creates plenty of barrels. The Triple-A barrel rate stands at an impressive 12 percent, as Wetherholt has continued to launch balls at ideal angles.
When you talk about consistency, Wetherholt is who comes to mind. Wetherholt has hits in 75 percent of his games and has been on base in 88 of 100 games played this year. The feel for the barrel is fantastic, and his approach is so sound. He has certainly lived up to the hype of the 2024 seventh overall pick.
Currently, Wetherholt has an 81 percent overall contact with an in-zone contact rate that jumps to around 85 percent. He does not expand the zone and has walked as often as he has struck out. While the contact numbers have dipped a bit in Triple-A, the power has come out, even under the hood. The approach has remained good with a low chase rate and a respectable in-zone swing rate.
At this point, it is time for Wetherholt to join the Cardinals. While we have been calling for him to be promoted for the last month, it feels imminent at this point.
JR Ritchie, RHP - Atlanta Braves
Ritchie has been great all year, but he has gotten better as the season has worn on, and his dominance against Triple-A hitters has him on the cusp of a major league debut. Across his last two starts, Ritchie has 18 strikeouts across 11 scoreless innings. Ritchie has allowed just three hits over that span.
In 2024, the velocity did not return fully after Tommy John, sitting in the low 90s, often closer to 91 mph. Ritchie has been working consistently at 93-94 mph and topped at 96 mph several times. Working a four and two-seam fastball, Ritchie has found plenty of success with both offerings, especially when you factor in a cutter that has around four mph of separation.
His slider sits between 83-85, with nice sweeping action, missing plenty of bats. Ritchie does an excellent job landing it for strikes in strong locations and getting chase out of the zone. The changeup played well, sitting 85-88 mph.
The curveball has been a strong offering, but Ritchie’s development of his cutter has given him an impressive arsenal of pitches. Considering he just turned 22 years old, Ritchie has everything you want to see from a future MLB starter, and it would not be surprising to see him in Atlanta soon.
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