Probably low 4.3 high 4.2s I mean there is not a lot of context to go by but a lot of scouts seem to think he is a 4.2 guy for giggles ill say 4.25
interesting evaluation from SI that has him as a 3rd rounder.
Evaluation:
Hyatt possesses legitimate track speed and should run a 40-time in the high 4.2s or low 4.3s. He plays with excellent foot speed, which helps him set up cuts in his routes and win against press coverage. The junior offers instant burst off the line of scrimmage with lethal acceleration to stack defensive backs. His long strides and explosiveness help him quickly eliminate the defensive back’s cushion when he faces off coverage. Hyatt puts in effort blocking for wide receiver screens and run plays, but his lack of play strength prevents him from excelling in this role. Fortunately, there’s room to add mass to Hyatt’s frame, assuming it doesn’t sap his explosiveness. He appears to have sufficient arm length to expand his catch radius and make receptions outside of his frame. Some of Hyatt’s best wins come on post, curl, sluggo, and go routes. He tracks the ball well and has examples of soft-hand catches. Hyatt scares college defenses when put in motion, and his speed makes him an excellent option for clear-out routes. The South Carolina native displays good snap at the top of curl routes, but there are instances where he struggles to sink his hips. Hyatt is a lean receiver who appears high-hipped. His play strength and lack of contact balance prevent him from generating yards after contact, and many of his routes are more rounded than crisp. Hyatt’s play strength shows up against press coverage. He struggles to fight through jams and has trouble creating separation against aggressive corners, who can bump the Fred Biletnikoff Award winner off his route. Hyatt struggles to combat the hands of defensive backs in press coverage. He needs to fill out his underdeveloped release package and become more comfortable hand-fighting with defenders. Hyatt lines up pre-snap with a high and upright stance, which provides a big target for defenders. The All-SEC receiver generates yards after the catch with speed, but he’s not elusive or twitchy in small spaces. He runs a limited route tree in Tennessee’s space-manufacturing offense and benefits from primarily playing in the slot. Hyatt has a poor feel for holes in zone and doesn’t always work back to his quarterback when the play breaks down. Drops remain a slight issue, and there are several examples of body catches on Hyatt’s tape. Despite his speed, the former four-star recruit doesn’t consistently generate separation coming out of his cuts. Hyatt doesn’t always run routes full speed on plays not designed to his side of the field, which frequently occurs in Tennessee’s offense. He has limited to no special teams experience with the Volunteers.
Its interesting that outside of his speed and willingness to block they have little good to say about him and that's been a trend.
