Lumbar bulging disc, retroactive to May 21. Hayes' back has been a recurring problem that also cost him time at the end of 2025. The Reds placed him on the IL while activating Eugenio Suárez. A rehab assignment is likely before reinstatement, pushing realistic return to mid-June.

The biggest Statcast buy-low in baseball right now: .169 wOBA vs. .309 xwOBA — a gap of .140, largest among all qualified hitters. His .106 batting average is ugly, but his expected BA is .237 and his average exit velocity is 90.1 mph. With Suárez on the IL, Hayes is getting everyday reps at third base. He's essentially free at 1% owned. The downside is limited (he's already at rock bottom), and if the underlying quality metrics catch up even halfway, you're looking at a useful 3B in 12+ team leagues. Chronic back concerns are the only long-term caution flag.