Mid-week fantasy baseball waiver wire rankings for Week 21 (2025). Free-agent hitters and pitchers to add include Bubba Chandler, Sal Frelick, Andrew Painter, Daniel Palencia, and Kristian Campbell.

Incredibly, there are a few weeks of August left, and we have just over a month of the 2025 MLB regular season. There is still time to catch up in the standings in roto leagues and make a playoff push in H2H formats. At RotoBaller HQ, we updated our top 100 hitters and pitchers list for Week 21--August 18 through August 24 to help fantasy managers stay on top of the waiver wire in leagues that allow daily moves.

There are key performances, prospect promotions, and injuries to watch for this week. The Pirates are finally calling up top pitching prospect Bubba Chandler ahead of Friday's gam

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