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Three top fantasy baseball prospects - Kyle Teel, Samuel Basallo, Ronny Mauricio - that can make big impacts. These MLB prospects are waiver wire pickups or stashes.
As we enter the mid-way point in June, we have seen several high-end prospects make an impact at the major league level this season. For example, this past week, we saw Boston infielder Marcelo Mayer begin to find his swing in the majors and Jac Caglianone post his first four-hit night in Kansas City.
In this piece, we will look at two prospects who recently got the call and one budding star in the minor leagues and determine if fantasy managers should consider adding them to their roster.
Should those players be left on the waiver wire? Let's dive in!
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Kyle Teel, C, Chicago White Sox
Current Level: MLB
Availability: 15% rostered
2025 MLB stats: 6 G, .214/.421/.214, 3 H, 2 R, 5 BB, 5 SO
Boston's "big three" could've been a foursome had they kept Teel, who was the headliner of the offseason Garrett Crochet trade with the White Sox. Teel was promoted to the majors on June 6. Will the Red Sox regret their decision to let him go?
Teel was a first-round selection of Boston in 2023 out of Virginia. Both his father, Garret, and brother, Aidan, play baseball. He put his talent on display immediately, slashing .363/.482/.495 during his first year in the pros.
Teel's performance saw him start the season in rookie ball and end it in Double-A. It was quite a jump for the 23-year-old. In 2024, he began the year in Double-A, posting an .852 OPS, 11 homers, and 60 RBI in 84 games.
As Teel remained consistent, it was a no-brainer to promote him to Triple-A, where he struggled a bit across 28 games. However, the jump from Double-A to Triple-A is known as one of the hardest for a prospect to make.
Teel proved these were growing pains when, in his first year in the White Sox's minor league system, he had 18 XBH alongside an .886 OPS in 50 games. With nothing left to prove, Teel's contract was selected earlier this month.
Teel will really get the opportunity to shine for the rebuilding White Sox. Even in a small sample size, the early results have been promising. He's collected three hits, five walks, and five strikeouts in 17 plate appearances for Chicago thus far. His first big league hit came off a Seth Lugo 1-1 changeup that left the bat at 95.6 mph.
Kyle Teel rips a liner the opposite way for his first Major League hit!
Welcome to The Show, Kyle 👏 pic.twitter.com/tp9qssqXRD
— MLB (@MLB) June 7, 2025
Seeing Teel continue to see ample playing time behind the dish and at DH is very positive. Given the power upside he has shown at the Triple-A level, he is worth adding as a high-upside No. 2 catcher in all formats.
-Written by Lauren Amour
Samuel Basallo, C, Baltimore Orioles
Current Level: Triple-A
Availability: 5% rostered
2025 AAA stats: 42 G, .264/.374/.597, 6 2B, 14 HR, 30 RBI, 41 SO
Samuel Basallo might be the best hitter in the minors right now, and he has catcher eligibility. What more do you need to know (I know catcher is super deep this year, but still)?
Basallo has been an age-to-level monster for the majority of his pro career. His major prospect breakout occurred in 2023 when he had a 164 WRC+ across Low-A, High-A, and a very short cup of coffee in Double-A at just 18 years old. His 2024 was not as successful as he had a 116 WRC+, but that is still very impressive for a 19-year-old across Double-A and Triple-A.
This season in Triple-A, he's loudly banging on the door to the majors as he seems to hit a homer every other night. He hit his 14th of the season on Thursday and is homering about once every 10 ABs. He has a 142 WRC+ and a solid approach at the plate to go with his massive power.
Basallo has a 24.8% K-rate and 14.9% BB-rate. Don't be deterred by his .244 BA, as he only has a .241 BABIP.
As the Orioles are getting healthier, the path to playing time for Basallo is becoming less clear. However, as this has been nothing short of a disaster season for the Orioles, they should be looking to sell some of their bats soon to open up playing time for their young prospects at the major league level, and that includes Basallo.
He's too good not to be in Baltimore at some point this summer.
When Basallo gets the call, he has the potential to be a starting-caliber catcher in most league formats if he gets enough playing time between backing up Adley Rutschman and rotating in at first base and DH.
Samuel Basallo, #16 MLB Prospect & #1 O's Propsect, has been raking in June 💣
.368 AVG/1.455 OPS/4 HR/6 RBI
Trade contract pieces & give him and Mayo consistent AB's. Have them ready to go for 2026!#birdland
— SleeperOrioles (@SleeperOrioles) June 9, 2025
- Written by Kevin Luo
Ronny Mauricio, 2B/3B/SS, New York Mets
Current Level: MLB
Availability: 15% rostered
2025 MLB stats: 8 G, .179/.281/.321, 1 2B, 1 HR, 2 SB, 11 SO
Mets No. 9 prospect Mauricio initially made his MLB debut in September 2023. He appeared in 23 games for New York that season, hitting .248 with two homers, nine RBI, and 31 strikeouts across 108 PAs. Unfortunately, that was all that Mets would see of him until June 3, 2025, after he tore his ACL in February 2024.
Therefore, the 24-year-old's rookie status remains intact.
Mauricio signed with the Mets out of the Dominican Republic as a 16-year-old in July 2017. He quickly rose to prominence in New York's farm system due to his power and contact skills. A switch-hitter, Mauricio belted 79 homers through his minor league career, putting up three consecutive 20+ home run seasons.
He paired that with 110 doubles and a .270/.313/.445 slash line in a little over five seasons.
It was a long road back for Mauricio following his injury. He began 2025 in Low-A, and after five games, traveled to Double-A for another five. It wasn't until his nine games in Triple-A that he finally found his rhythm, batting .515 with four XBH, eight RBI, five walks, and four steals.
Mauricio made his long-awaited return to the majors at the beginning of June. His lone homer thus far came at Coors Field, traveling 456 feet and coming off the bat at 110.3 mph.
He nearly had a second home run in Colorado, but he settled for a 407-foot double instead. He's been hitting the ball hard, and although most of his production so far has come against the Rockies, it's still a good sign. It's going to take some time for Mauricio to get going -- he only has 34 games under his belt at the MLB level, after all.
456 ft roundtripper for Ronny Mauricio!
It marks the longest @Mets homer of 2025 and the first at the MLB level for the 24-year-old since '23: pic.twitter.com/ERkFpQuIOE
— MLB Pipeline (@MLBPipeline) June 8, 2025
Given his ability to hit for power and steal bases, Mauricio is worth targeting in category formats as a depth infielder. However, his .231 xBA suggests he will not be a consistent producer when looking to boost your batting average.
- Written by Lauren Amour
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