This week's Waiver Wire Watch highlights key players under 40% rostered in ESPN formats for fantasy baseball. Jonathan Aranda (TB) continues to impress with a .367 average and significant power in recent games, while Tyler Fitzgerald (SF) showcases speed and a hot streak, hitting .353 over his last ten games. Dylan Moore (SEA) benefits from increased playing time due to injuries on his team, hitting .308 and displaying speed potential. Other notable players include Rhys Hoskins (MIL), who is gaining momentum post-injury, and Chandler Simpson (TB), whose speed makes him an enticing add. Sal Frelick (MIL) and Jorge Polanco (SEA) also show promise, solidifying their everyday roles. For deeper leagues, players like Mike Yastrzemski (SF) and Gabriel Arias (CLE) are notable mentions, offering reliable contributions and multi-position eligibility.