The fantasy baseball waiver wire is buzzing heading into the July 4th holiday weekend, with a mix of injury setbacks and promising returns shaping roster decisions across leagues. As of July 3, 2026, fantasy managers need to act quickly on several high-priority signals — from a veteran starter's delayed comeback to a hard-throwing ace making his long-awaited return to the mound. Here is everything you need to know to stay ahead on the waiver wire and in your lineup.