Week 20 of 2025 brings a well-defined waiver wire chorus for fantasy baseball rosters. Michael Wacha leads the shallow-league pool in Royals country, offering steady five-inning starts and a reliable path to wins without unsettling strikeout tallies. Cade Horton has seized his Cubs window with four straight quality frames and strong walk control, while Spencer Arrighetti anchors the Astros’ post-IL recovery, supported by a favorable xERA trend. Logan Henderson’s Brewers return and Nick Martinez’s bullpen-to-rotation versatility add depth, with Luis Severino re-emerging for the Athletics and providing a usable floor in multiple formats.

On the middle-to-deeper end, Slade Cecconi’s consistent, low-walk, five-innings-propensity profile makes him a smart pickup; Emmet Sheehan leverages a Dodgers rotation seat with improved miss rates; Jacob Lopez shows late-season swing-and-miss upside for the Athletics; and Justin Verlander, quietly, has posted a sub-1.00 WHIP over recent series and lands Washington and Tampa Bay in Week 20. Shane Smith’s White Sox continue to offer a usable floor, while Cristian Javier anchors the “other” bucket with solid strike-zone management.

Further down, Carson Whisenhunt, Cade Cavalli, Carlos Carrasco, and Hurston Waldrep are highlighted as longer-shot but intriguing targets in deeper leagues. Overall, active rosters should chase upside in Arrighetti, Horton, Sheehan, and Verlander while rotating in Wacha, Cecconi, and Severino for weekly streamability.