The Reds recalled Williamson from Triple-A Louisville on Tuesday.
As anticipated, Williamson will make his MLB debut in a start Tuesday night against the Rockies. The game is at Coors Field and Williamson had struggled to a 6.62 ERA and 1.88 WHIP through 34 innings this season at Triple-A, so he's probably more of a wait-and-see type in fantasy. The 25-year-old left-hander could carry streaming appeal in more favorable matchups down the line.