Week 18 of the 2025 fantasy baseball season brings a host of starting pitcher waiver wire pickups that can bolster your roster. Eric Lauer has emerged as a standout for the Toronto Blue Jays, boasting a formidable 2.61 ERA and six wins. Ryne Nelson of the Arizona Diamondbacks has also shown consistency with a stellar 3.29 ERA over his last five starts. Baltimore's Dean Kremer remains a polarizing figure with eight wins but inconsistent outings, while Jose Soriano from the Angels offers an impressive 68.5% ground ball rate. Will Warren of the Yankees is an intriguing option if he can maintain his strikeout ability despite a high ERA.

For deeper leagues, Nick Martinez from the Reds provides reliable innings, while Zebby Matthews is showing promise after a strong outing against the Nationals. Luis Severino has turned a corner recently, exhibiting potential as a backend rotation piece. Kumar Rocker, who is adapting his pitch mix, could be a gem moving forward. Joe Boyle's recent promotion in Tampa adds to a growing list of options for fantasy managers looking to fill gaps in their pitching rotations.