Final-week fantasy hoarding on the waiver wire centers on rookies and closers as MLB enters Week 21. With 45 days left in the regular season, rookie eligibility for 2026 ROY remains a live asset, spurring a trio of notable recalls and several deeper adds. Basallo, McLean and Abreu headline the top pickups, while Lopez provides a two-start streamer option and Beavers and Vodnik offer meaningful upside in deeper leagues.

Basallo anchors Baltimore’s prospect surge, offering catcher/first-base flexibility and a power-heavy profile that could carve immediate value in shallow formats. McLean’s Mets debut drew rave notes for breaking-ball command and a strong grounder-rate that could sustain multi-start value if the workload cooperates. Abreu stands as Houston’s next-in-line nearer—an attractive upside play if Hader’s health costs him time, with elite ratios and strikeout potential. Lopez’s left-handed mix has you leaning him as a pitcher only, given innings caps, while Beavers and Vodnik supply late-season upside in deeper builds: Beavers via a balanced tools profile and Vodnik via save opportunities in a volatile closer landscape.