Thieneman is a quarterback on the back end — the kind of safety who adjusts the secondary pre-snap, diagnoses route concepts in real time, and positions himself to take away throwing windows before the ball leaves the passer's hand. His instincts are legitimately elite, and his 4.35 speed gives him the range to be a true centerfielder when asked. The limitations are real: he's not a thumper, his man coverage cracks against NFL-caliber route runners with quick breaks, and play-action will bait him more at the next level. But the floor here is a 10-year starter who makes everyone around him smarter. The ceiling is Harrison Smith 2.0 in the right scheme.

• 🪂Elite coverage instincts — reads route concepts early, positions himself to take away throwing windows before the ball is released
• 🃏Scheme-versatile chess piece who lined up in the box, deep half, slot, and robber throughout his college career with equal effectiveness
• 🏎️Legitimate 4.35 range to play single-high and close sideline to sideline, with closing burst that shows up constantly on underneath throws
• 🤲Ball-hawking ability — 8 career interceptions, including 6 as a true freshman, with natural hands and ball-tracking skills
• 👑Relentless motor and leadership — obsessive preparation, 5:30 AM facility arrival, and defensive signal-caller responsibilities at two programs

• 💨Man coverage breaks down against NFL-level route runners on longer-developing routes; average change of direction in tight spaces limits his slot/nickel projection
• 🦬Not a physical tackler — uses body weight to drag down ball carriers rather than delivering impactful hits, and lacks stopping power at the point of contact
• −Play-action vulnerability — eagerness to trigger downhill gets him caught leaning forward on play fakes, opening space behind him
• 🤲Block-shedding is a work in progress at 201 lbs; tight ends and bigger bodies can overwhelm him when he fails to use active hands to disengage