This week's waiver wire is particularly intriguing as MLB teams maneuver through post-trade deadline adjustments. New closers are stepping into the spotlight while others falter in their new roles. Dennis Santana of the Pittsburgh Pirates, despite a rough start, remains the primary option for saves following David Bednar's trade. Jose A. Ferrer is poised to be the Nationals' go-to closer after Kyle Finnegan's departure, while the San Francisco Giants’ Randy Rodriguez could also become an elite closer given his strikeout potential. Phil Maton of the Texas Rangers is stepping into a lead role as the team’s bullpen undergoes changes. In deeper leagues, Blake Treinen and Alex Vesia of the Dodgers are sharing save opportunities, while the Orioles' Keegan Akin and Yennier Cano are both vying for ninth-inning duties. With various committees forming, fantasy managers should stay alert.