A grade written in pencil, and honestly labeled as such: Guarnera has no draft-facing resume yet — this is a bet on role and trajectory. The redshirt sophomore earned PFF recognition among the nation's top returning guards for his 2025 work, then moved to center this offseason, where he'll make the line calls for Kyle Whittingham's first Michigan offense as the unit's emerging voice. Interior linemen who own protections early in their careers tend to keep getting promoted, and the coaching staff's leadership praise is consistent across every outlet covering the program. However, a first-year center in a first-year scheme is a projection stacked on a projection, and there is no tape argument here — the grade is program trust and positional runway, not proof. His timeline points to the 2029 class at the earliest. Fringe grade today; two clean seasons of snapping and calling it, and he becomes a real center prospect.