Buffalo Bills’ undrafted rookie defensive back Kani Walker was a rather unknown commodity heading into this summer’s training camp. like, based on my own reflecting,” Bills’ rookie defensive back Kani Walker said following Monday’s practice at One Bills Drive. July 29, 2026; Pittsford, NY, USA; Buffalo Bills defensive back Kani Walker (41) runs a drill during training camp at St. John Fisher University. And, new Bills’ defensive coordinator Jim Leonhard appears to have a bit of a soft spot for the former Razorback and the current position that he finds himself in. Buffalo Bills defensive coordinator Jim Leonhard visits with players during Day Two of Bills training camp at St. John Fisher University in Pittsford, New York, on Thursday, July 30, 2026.