As the 2025 fantasy baseball season nears, savvy fantasy managers are looking beyond the household names to find those under-the-radar players who could provide substantial returns. 

These 2025 Fantasy Baseball Sleepers could emerge as key contributors to your team, offering value far beyond their average draft position (ADP). Here are the Top 10 Fantasy Baseball Sleepers for 2025 that you should consider drafting!

 

 

 

Top 10 Fantasy Baseball Sleepers For 2025 MLB

Junior Caminero, 3B, Tampa Bay Rays

Caminero, one of baseball’s most exciting young prospects, faced injuries in 2024 but still managed to showcase flashes of his immense potential. His standout performance in the Dominican Winter League has scouts and fans buzzing, suggesting he’s poised for a significant breakout in 2025.  

Currently coming off the board around pick 100 in fantasy drafts, Caminero is projected to hit in the heart of Tampa Bay’s lineup. At just 21 years old, his combination of raw power and advanced hitting skills could make him one of the premier young power hitters in the league as early as this season.

Spencer Schwellenbach, SP, Atlanta Braves

Schwellenbach bounced back impressively from a rocky start in 2024, delivering a dominant second half that saw him post a 2.73 ERA with 86 strikeouts across 79 innings following the All-Star break. His ability to adjust and find consistency highlighted his potential as a top-tier pitcher.  

Currently being drafted as SP30, Schwellenbach benefits from being part of a strong Braves rotation, backed by one of the league’s most potent offenses. If he can sustain his late-season form, there’s significant upside for him to outperform his draft position and become a key contributor for fantasy managers in 2025.

Michael Toglia, 1B/OF, Colorado Rockies

Looking for raw power? Michael Toglia showcased his slugging potential last season with a .238 ISO and 25 home runs across 116 games. While his .218 batting average and a high 32% strikeout rate are definite concerns, Toglia’s 12% walk rate adds some balance to his profile. 

Playing half his games at Coors Field only enhances his value, as the hitter-friendly environment can amplify his power numbers. Statcast metrics highlight his elite power, with impressive rankings in xwOBA, xSLG, Exit Velocity, Barrel%, and Hard-Hit%. 

If he experiences better batted-ball luck this season, Toglia could become a major force in fantasy baseball.

 

 

 

Dylan Crews, OF, Washington Nationals

Crews, a consensus top-10 prospect, made his MLB debut in 2024 with the Washington Nationals, showcasing glimpses of his potential. In limited action, he stole 12 bases and collected nine extra-base hits, hinting at his intriguing combination of speed and power. 

While his .219/.288/.353 slash line leaves room for growth, his skill set suggests significant upside if he can adjust to big-league pitching. Currently being drafted as OF38, Crews has sleeper appeal in 2025 Fantasy Baseball. 

If he secures an everyday role, his blend of tools could make him a breakout player and a valuable late-round steal for fantasy managers.

Shane Baz, SP, Tampa Bay Rays

After missing two seasons due to Tommy John surgery, Shane Baz made an impressive return in 2024, showcasing the talent that once made him one of MLB’s top pitching prospects. Over 79.1 innings, Baz posted a strong 3.06 ERA and struck out 69 batters, reminding everyone of his electric arm. 

With a full offseason to continue building strength and refining his craft, Baz’s elite slider and strikeout potential position him as a breakout candidate in 2025. Currently being drafted as SP54, Baz could be a massive steal if he regains his pre-injury form, making him a high-upside option.

Jake Burger, 1B, Texas Rangers

Jake Burger crushed 29 home runs for the Marlins in 2024, and now he’s poised for even greater success in a stacked Texas Rangers lineup. Hitting in one of MLB’s most hitter-friendly ballparks, Burger is a strong candidate to match or surpass last season’s impressive power numbers. 

With a draft position hovering around 14th among first basemen, he offers solid value for fantasy managers. If he can stay healthy, Burger has the potential to deliver career-best marks in both home runs and RBIs, making him an exciting pick for those seeking power upside in the middle rounds.
 

Spencer Arrighetti, SP, Houston Astros

Arrighetti delivered an impressive rookie season, capped off by a stellar second half where he posted a 3.18 ERA and an impressive 10.8 K/9 rate. Entering 2025, he’s currently being drafted as SP67, which makes him an intriguing sleeper candidate. 

With a spot secured in Houston’s rotation, his elite strikeout ability gives him significant upside for fantasy managers looking for value. If Arrighetti can continue to refine his command and limit walks, he has the potential to emerge as a reliable mid-rotation arm with upside, making him a worthwhile target in deeper leagues or as a late-round steal.

 

 

 

Ryne Nelson, SP, Arizona Diamondbacks

Nelson’s impressive performance during the second half of the 2024 season, posting a 4-0 record with a 3.23 ERA and 9.4 K/9 rate, has positioned him as a sleeper candidate for the 2025 season. Despite this strong finish, he is still being drafted as SP140, making him one of the best late-round values available. 

With a secure spot in the starting rotation and the chance to build on his late-season momentum, Nelson could become one of the breakout pitchers of 2025, offering great upside for fantasy owners willing to take a risk on him.

Tyler O'Neill, OF, Baltimore Orioles

O’Neill is coming off a strong 31-homer season with the Red Sox and is now set to join the Orioles, offering a promising opportunity for continued success. 

The move to Camden Yards, known for its hitter-friendly dimensions, could potentially amplify his power even further. While his injury history keeps his draft price low, O’Neill’s potential for a 30-homer campaign in the right environment makes him an intriguing sleeper pick for fantasy managers. 

Currently being drafted as OF46, he offers significant upside at an affordable cost, making him a great value target for those looking for power.

Mark Vientos, 3B, New York Mets

Mark Vientos showcased his potential in the 2024 season, belting 27 home runs in just 111 games while posting a solid .249 ISO. Despite a concerning strikeout rate approaching 30%, his impressive power and ability to drive the ball are evident. 

Vientos’ value is further elevated by his place in a star-studded Mets lineup, alongside established hitters like Francisco Lindor, Juan Soto, and Pete Alonso, providing him with plenty of opportunities to drive in runs. 

Currently being drafted around pick 100, Vientos has the potential to exceed expectations, especially if he continues to progress in the upcoming season.

 

 

 

Fantasy Baseball Sleepers In 2025 Can Take Your Team To The Next Level

When targeting 2025 Fantasy Baseball Sleepers, remember to balance potential upside with solid performance history. Whether you're in a deeper league or looking for high-risk, high-reward options, these MLB Sleepers 2025 could provide the breakthrough performances needed to give your fantasy squad a competitive edge. 

As always, monitor spring training closely to see how these players are faring and adjust your draft strategy accordingly. These 2025 Fantasy Baseball Sleepers are just waiting for their moment to shine – could they be the key to your championship season?