Week 20 waiver wire adds spotlight Bryan Abreu, Luke Keaschall, Owen Caissie, Chase Burns, Samuel Basallo, and Bubba Chandler as managers chase the last big pushes of the season. Hader’s IL stint opens saves opportunities for Abreu in Houston, while Caissie earns a quick promotion in Chicago after a monster Triple-A season. Keaschall has quietly surged, and Burns, Basallo, and Chandler offer intriguing prospect paths for deeper formats. The piece emphasizes prioritizing daily moves, monitoring injuries, and leveraging top prospect lists in the final stretch.