As Week 18 of the 2026 fantasy baseball season unfolds, the waiver wire is buzzing with pitching talent that can tip the scales in both shallow and deep leagues. Managers scouring the under‑40‑percent rostered pool in shallow formats and the sub‑30‑percent group in deeper circuits are finding a surprising influx of arms that have begun to turn heads.
Roki Sasaki continues to impress after a dominant stretch that includes a seven‑inning outing against the New York Mets, where he yielded just one run and struck out nine batters. His recent form suggests a high ceiling for the remainder of the season.
Michael McGreevy has also carved out a niche, logging a seventh‑inning start that saw him surrender four runs while fanning three. The performance sits alongside a 3.07 ERA and a 1.13 WHIP, making him a viable plug‑in for teams needing depth.
Shane Drohan brings a different kind of reliability, having accumulated five wins with a 3.20 ERA and a 1.18 WHIP across 76 innings. His ability to eat innings adds a valuable layer of stability to any rotation.
Walbert Urena’s July surge is highlighted by a 1.15 ERA and a matching WHIP, complemented by 14 strikeouts in 15 frames over three starts. The consistency has turned him into a sleeper worth monitoring.
Christian Scott’s four‑seamer continues to generate buzz, posting a 28.8% strikeout rate and 78 strikeouts in 63 innings. The combination of raw power and control makes him an attractive add for those seeking upside.
Deeper League Options
For deeper formats, the pool expands to include Kyle Leahy, who has started 19 games, secured seven victories, and posted a 3.59 ERA with 79 strikeouts in 95 innings. His durability could prove decisive in tight matchups.
Brady Singer, sitting at three wins with a 4.72 ERA and a 1.47 WHIP, has shown a marked improvement in June and July, hinting at a breakout trajectory.
Zac Thornton’s recent four‑start stretch includes a win, a 1.93 ERA, and a 0.86 WHIP, underscoring his command and strikeout upside.
Keider Montero, currently 7‑2 with a 3.14 ERA and a 0.96 WHIP, benefits from a potential trade scenario involving Tarik Skubal that could reshape his rotation role.
Brandon Pfaadt enters the conversation at 4‑0 in July, posting a 2.49 ERA, a 1.15 WHIP, and 12 strikeouts in 21 innings. His groundball rate remains high, and his secondary pitches — a sharp change‑up and a sweeping slider — have become increasingly effective.
Other notable contributors include Robert Gasser, Anthony Kay, Ronel Blanco, Grayson Rodriguez, Patrick Sandoval, Ryan Johnson, and Gabriel Hughes, each offering a unique blend of experience and potential.
With the playoff push looming, these arms provide a strategic edge, allowing fantasy managers to shore up rotations and exploit favorable matchups before the postseason.