As we take a look at the RotoProspects fantasy baseball rankings and projections, we can tell you that securing a reliable first baseman can be a make-or-break issue for your roster. The 2025 season boasts some powerhouse sluggers at the top, with a mix of elite talent and rising stars.
Here at RotoProspects, we provide 2025 fantasy baseball position-by-position rankings and projections, broken into tiers. Here’s a quick look at the first two tiers. You can check out the entire list of the top 56 first basemen, broken into eight different tiers, by clicking here (subscription required).
Tier 1: The Elite Options
1. Vladimir Guerrero Jr., TOR
At just 26 years old, Guerrero (pictured above) remains a premier bat, projecting .301 AVG, 32 HR, 101 RBI, and .908 OPS. His elite contact skills and low 13.8% K rate make him a cornerstone for any fantasy team.
2. Bryce Harper, PHI
Harper’s transition to first base hasn’t slowed his bat. With a .277 AVG, 30 HR, 94 RBI, and 10 SB, he offers a rare blend of power and speed at the position. His 12.8% BB rate makes him especially valuable in OBP formats.
3. Freddie Freeman, LAD
Freeman continues to be a model of consistency, projecting .284 AVG, 23 HR, and 9 SB, with elite counting stats. His .842 OPS and 11.2% BB rate ensure he remains an excellent fantasy asset.
4. Matt Olson, ATL
Olson’s power is undeniable, with a projected 35 HR, 103 RBI, and strong OBP skills. However, his .251 AVG and 23.9% K rate could limit his ceiling in batting average leagues.
5. Pete Alonso, NYM
A perennial home run threat, Alonso is projected for 36 HR, 99 RBI, and a .818 OPS. While his batting average (.245 AVG) isn’t elite, his ability to drive in runs keeps him among the top-tier options.
| No. | TIER 1 | Age | PA | HR | R | RBI | SB | AVG | OBP | SLG | OPS | BB% | K% |
| 1 | Vladimir Guerrero Jr., Tor | 26 | 669 | 32 | 93 | 101 | 4 | .301 | .379 | .529 | .908 | 10.1 | 13.8 |
| 2 | Bryce Harper, Phi | 32 | 644 | 30 | 89 | 94 | 10 | .277 | .372 | .503 | .875 | 12.8 | 21.6 |
| 3 | Freddie Freeman, LAD | 35 | 662 | 23 | 93 | 90 | 9 | .284 | .372 | .470 | .842 | 11.2 | 16.2 |
| 4 | Matt Olson, Atl | 31 | 675 | 35 | 89 | 103 | 0 | .251 | .343 | .486 | .829 | 11.6 | 23.9 |
| 5 | Pete Alonso, NYM | 30 | 641 | 36 | 84 | 99 | 3 | .245 | .332 | .486 | .818 | 9.8 | 23.1 |
Tier 2: Strong Starters
6. Josh Naylor, ARI
Naylor provides solid all-around production, with a .265 AVG, 22 HR, and 7 SB. His low 15.5% K rate makes him a reliable option for points leagues.
7. Christian Walker, HOU
Walker’s 30 HR and 92 RBI make him an appealing power bat, but his .243 AVG and 22.6% K rate could cause fluctuations in performance.
8. Jake Burger, TEX
Burger’s power potential is intriguing, with a projected 32 HR and 87 RBI. However, his .248 AVG and 26.7% K rate make him a riskier pick.
9. Triston Casas, BOS
A young star in the making, Casas combines 27 HR, .253 AVG, and a .819 OPS, with a 12.8% BB rate, making him especially valuable in OBP leagues.
10. Vinnie Pasquantino, KC
Pasquantino offers a well-rounded skill set with .266 AVG, 22 HR, and .788 OPS. His elite 12.9% K rate suggests a high floor, making him a safe bet at first base.
| No. | TIER 2 | Age | PA | HR | R | RBI | SB | AVG | OBP | SLG | OPS | BB% | K% |
| 6 | Josh Naylor, Ari | 28 | 604 | 22 | 73 | 84 | 7 | .265 | .332 | .446 | .778 | 8.5 | 15.5 |
| 7 | Christian Walker, Hou | 34 | 636 | 30 | 78 | 92 | 4 | .243 | .322 | .458 | .780 | 9.4 | 22.6 |
| 8 | Jake Burger, Tex | 29 | 599 | 32 | 74 | 87 | 1 | .248 | .305 | .478 | .783 | 6.4 | 26.7 |
| 9 | Triston Casas, Bos | 25 | 608 | 27 | 79 | 84 | 0 | .253 | .351 | .468 | .819 | 12.8 | 26.1 |
| 10 | Vinnie Pasquantino, KC | 27 | 613 | 22 | 75 | 82 | 1 | .266 | .335 | .453 | .788 | 9.0 | 12.9 |
Check out the rest of the first basemen, as well as the other positions we have posted, as we help you dominate your fantasy baseball drafts.