Sal Stewart's breakout season puts him on the precipice of a major league promotion as Cincinnati chases the NL playoff, with .311/.383/.526 across Double-A/Triple-A, 19 homers and 17 steals. With McLain underperforming at 2B, Stewart's contact-first approach could slot smoothly into the Reds' lineup and juice fantasy value in his debut. The piece also maps September callups to watch for contenders and future openings in 2026, highlighting Spencer Jones, Justin Crawford, Masyn Winn, JJ Wetherholt, Tong, Sproat, Bryce Eldridge, Painter, Griffin, Max Clark, Walker Jenkins, Dylan Crews and Wyatt Langford among others.

Rosters expand Sept. 1; teams will add players and pitchers as they jockey for playoff positioning. The narrative weighs the risks of relying on prospects in fantasy, but flags Stewart as a plausible upgrade for Cincinnati at second base, with potential ripple effects on surrounding hitters and roster construction.