The fantasy basketball waiver wire is already generating serious activity as the 2026-27 preseason gets underway, and October 7, 2026 brings five high-severity injury signals that every manager needs to monitor. From a star forward without a return timeline to multiple day-to-day question marks heading into preseason openers, the NBA injury report is shaping roster decisions right now. Whether you are scouring the fantasy basketball waiver wire for emergency adds or simply protecting your starters, these signals deserve your immediate attention.