RADIO
Three top fantasy baseball prospects - Jac Caglianone, Jordan Lawlar, Coby Mayo - that can make big impacts. These MLB prospects are waiver wire pickups or stashes.
With the MLB season entering Week 10, we have seen several high-end players hit the injured list. As a result, many MLB teams have begun to promote the top options in their system to fill holes on their current roster.
This week, we saw the Royals promote top prospect Jac Caglianone from Triple-A and the Orioles promote third base prospect Coby Mayo. In addition, we saw the Diamondbacks send top infield prospect Jordan Lawlar back to Triple-A after a disappointing stint in the big leagues.
So, let's dive in and see if these three prospects should be stashed or grabbed off the waiver wire before it's too late.
Be sure to check all of our fantasy baseball lineup tools and resources:- Fantasy baseball trade analyzer
- BvP matchups data (Batter vs. Pitcher)
- PvB matchups data (Pitcher vs. Batter)
- Who should I start? Fantasy baseball comparisons
- Daily MLB starting lineups
- Fantasy baseball closer depth charts
- Fantasy Baseball live scoreboard
- Fantasy baseball injury reports
Jac Caglianone, 1B/OF, Kansas City Royals
Current Level: Kansas City Royals
Availability: 40% rostered
2025 MiLB stats: 50 G, .322/.389/.593, 15 HRs, 56 RBI, 41 R, 46 SO
It's Caglianone time, baby! After mashing his way into our hearts, Caglianone will now hopefully be mashing home runs for our fantasy teams as the Kansas City Royals are calling the former Florida Gator up for his MLB debut on Tuesday.
No prospect in baseball has a higher power tool grade than Jac Caglianone 💪
The @Royals' 2024 first-rounder ups his Double-A @nwanaturals slash line to .310/.390/.520 on his 5th homer of the year. pic.twitter.com/h3pNjPLzmJ
— MLB Pipeline (@MLBPipeline) May 4, 2025
In 50 games between Double-A and Triple-A, Caglianone slashed .322/.389/.593 with nine doubles and 15 home runs, most of which were mammoth shots. Saying Caglianone has elite raw power is selling him short, as I believe he has one of the five highest power ceilings in all of baseball, and he showed that in Triple-A with a 57.5% hard-hit rate and a 17.5% barrel rate.
While he does chase too much, and that could become an issue in the majors, Caglianone posted a solid 10.5% walk rate, 20.1% strikeout rate, and a 76% contact rate this season in the minors. Even if the average is a bit lower due to the chase issues, I'd be shocked if the power didn't immediately translate.
Fantasy managers should expect the budding star to have an everyday role in the right field in Kansas City. Drew Waters and Mark Canha have seen most of the time in right field but have posted a .698 OPS and .621 OPS, respectively, through the opening months of the campaign.
Needless to say, he needs to be immediately added in all leagues where he's still available.
-Written by Eric Cross
Jordan Lawlar, INF, Arizona Diamondbacks
Current Level: Triple-A
Availability: 5% rostered
2025 MLB stats: 8 G, .000/.136/.000, 9 SO
2025 AAA stats: 39 G, .338/.414/.569, 6 HRs, 48 RBI, 33 R, 13 SBs
Welcome back to the stash list, Jordan Lawlar. I'm sure he's not excited to be back, but that's what happens when you go hitless in 22 plate appearances spread across sporadic playing time. There's simply no everyday lineup spot for Lawlar right now, and probably won't be until an injury pops up for Arizona.
It also didn't help that Lawlar was chewed up and spit out against breaking balls. That's putting it nicely, too. Lawlar faced breaking balls 46.5% of the time in his brief Major League stint and whiffed at an alarming 52.2% clip.
During his first stint in the major leagues, back in 2023, Lawlar appeared in just 14 contests and held a .129/.206/.129 line with a stolen base.
However, at Triple-A, Lawlar has been one of the most effective bats in the minor leagues. Earlier this season, Lawlar posted an incredible .338/.414/.569 slash line with 15 doubles, six long balls, and 13 stolen bases. He battled numerous injuries during the 2024 campaign but was productive when he was on the field.
Across 23 games in the Arizona system last summer, the former sixth overall pick held an impressive .318/.417/.482 line.
What's better than a Jordan Lawlar home run? A Jordan Lawlar home run with a view 😍 pic.twitter.com/cFB0FUQ8mi
— Reno Aces (@Aces) April 13, 2025
While injuries limited him in 2024, Lawlar has been able to take the next step at Triple-A and should be poised to do so when given another look at the majors. However, given the emergence of Geraldo Perdomo at shortstop and Eugenio Suarez, and Ketel Marte being mainstays at third and second base, Lawlar will likely have to wait several weeks to get another call.
At this point, I wouldn't be holding or stashing him outside of deeper formats, as I'm expecting Arizona to give him time in Triple-A to work on this issue before they bring him back up. If Arizona begins to deal with numerous injuries, they could opt to promote Lawlar sooner, which is expected, but will likely opt to have him continue his development with Triple-A.
- Written by Eric Cross
Coby Mayo, 3B, Baltimore Orioles
Level: Baltimore Orioles
Availability: 10% rostered
2025 MLB stats: 6 G, .105/.150/.105, 0 HRs, 1 RBI, 8 SO
2025 AAA stats: 45 G, .226/.318/.452, 8 HRs, 28 RBI, 24 R
The final prospect we will look at is Coby Mayo of the Baltimore Orioles. Mayo made his MLB debut in 2024 but was only given a brief 17-game taste of the big leagues. Then, earlier this season, Mayo was promoted to Baltimore again but only stayed for a week before returning to Triple-A. However, the Orioles gave May his third call to the bigs, and this stint could go much differently.
Currently, both Ryan Mountcastle (hamstring) and Jordan Westburg (hamstring) are on the 10-day injured list. This past weekend, Mayo was given a start at first base, which is a very promising sign for his potential playing time during this stint. In the past, Mayo was often viewed as a bench bat in the majors who saw occasional time at the hot corner.
When on the field, Mayo has flashed elite power upside. In 2024, the former fourth-round pick was one of the most dominant power hitters at the level. With the Norfolk Tides, Mayo posted a .287/.364/.562 slash line with 23 doubles and 22 long balls across an 89-game stint. During this stretch, he posted a stellar .926 OPS and added 67 RBI.
Oh my god.
Coby Mayo just hit the furthest home run of all time and you can’t convince me otherwise.
— Ben Verlander (@BenVerlander) April 5, 2024
This summer, Mayo got off to a bit of a cold start with Triple-A but began to find his power shortly before his promotion. Since April 12 (with Triple-A), Mayo posted a .238/.333/.500 line with seven doubles, seven long balls, and 19 RBI, which was right in line with his 2024 power production.
Fantasy managers should continue to monitor his playing time, but seeing him already earn opportunities at first base is a very promising sign. If Mayo can continue to see consistent at-bats, he will begin to flash his elite raw power in the majors.
He is worth stashing in all 12+ team formats before the breakout occurs.
- Written by Andy Smith
More Fantasy Baseball Prospects and Rookies
Download Our Free News & Alerts Mobile App
Like what you see? Download our updated fantasy baseball app for iPhone and Android with 24x7 player news, injury alerts, sleepers, prospects & more. All free!
