Selected in the fifth round (134th overall) of the 2006 NFL Draft out of LSU, Kyle Williams was widely written off by talent evaluators as undersized for an interior defensive lineman. Standing 6 feet 1 inch and tipping the scales around 300 pounds, "Meatball" proved his doubters wrong almost instantly, seizing a starting job as a rookie and serving as the uncontested heart and soul of Western New York for 13 seasons.

What Williams lacked in prototypical length, he made up for with a low center of gravity, cat-like initial quickness, and a motor that never stopped. Operating as a 3-technique and nose tackle across multiple defensive schemes, he used leverage and explosive hand placement to shoot interior gaps before guards could set their bases. Against the run, he routinely disrupted plays in the backfield, while his relentless effort as a pass rusher made him a constant threat to push the pocket from the inside.

Williams secured his full-time starting position in 2006 and gradually established himself as one of the league’s most esteemed interior defenders. His standout season came in 2010, showcasing an exceptional performance. During that year, he recorded 73 tackles, 5.5 sacks, and 14 tackles for loss, earning Second-Team All-Pro honors and his first Pro Bowl invite.

Throughout the decade, consistency defined his career. Williams earned four additional Pro Bowl selections in 2012, 2013, 2014, and 2016. In the 2013 season, he partnered with Marcell Dareus, Mario Williams, and Jerry Hughes to create the formidable "Cold Front" defense, achieving a personal best with 10.5 sacks while playing as a defensive tackle.

Williams, the longest-serving Bill during a prolonged postseason absence, showcased his leadership culminating in 2017. He played a key role in returning Buffalo to the playoffs after 17 years, even lining up as a fullback to score a rushing touchdown in Week 17, securing their spot. He finished his illustrious career in 2018 with his sixth Pro Bowl selection before retiring.

Williams, who played his entire career as a Bill, played 183 games (178 starts), with 610 tackles, 103 tackles for loss, and 48.5 sacks—setting the franchise record for sacks by a defensive tackle.