Undrafted doesn’t mean overlooked in Detroit—Eric O’Neill, Anthony Lucas, and Aidan Keanaaina all have the tools to crash the roster and become this year’s surprise contributors for a Lions team that thrives on competition.
Every year, a handful of undrafted free agents find a way to stick on NFL rosters, and the Detroit Lions have shown they are more than willing to give those players real opportunities. With a roster built on competition and development, Detroit’s 2026 UDFA class features several intriguing names—but three stand out as strong candidates to make the team: Eric O’Neill, Anthony Lucas and Aidan Keanaaina.
Eric O’Neill may be the most well-rounded of the group. The former Rutgers edge defender brings a combination of size, effort and proven production across multiple programs. After a breakout season at James Madison, O’Neill transferred to Rutgers and held his own against tougher competition. He consistently generated pressure, showing the ability to disrupt plays even when he didn’t finish with sacks. His versatility—being able to play on the edge or reduce inside in certain packages—gives him added value in a defensive front that prioritizes flexibility. If he can clean up his tackling and continue to refine his pass-rush moves, O’Neill has a legitimate shot to carve out a rotational role.
Anthony Lucas offers perhaps the highest upside of the trio. The former USC defensive lineman has the kind of physical traits that are hard to teach. With his length, explosiveness and natural strength, Lucas fits the mold of a developmental player who could thrive in the right system. While his college production didn’t always match his tools, the flashes are undeniable. Detroit’s coaching staff has shown a willingness to bet on traits, especially along the defensive line, and Lucas could benefit from that approach. If he puts together a strong training camp and shows consistent effort, he could force his way into the conversation for a depth spot.
Aidan Keanaaina brings a different, but equally valuable, skill set to the table. The former Cal defensive tackle is known for his power and ability to clog the middle of the line. At his best, he can anchor against double teams and free up linebackers to make plays—an often overlooked but critical role in any defense. Keanaaina also flashes surprising quickness for his size, allowing him to occasionally collapse the pocket from the interior. For a Lions defense looking to continue improving its run stopping, his presence could be a strong fit. His path to the roster may depend on special teams contributions and consistency in limited reps, but the foundation is there.
What makes all three players particularly interesting is how they align with Detroit’s identity under head coach Dan Campbell. The Lions value toughness, effort and physicality—traits that each of these defenders has shown at different points in their college careers. None of them enter camp as finished products, but all three bring enough upside to justify serious consideration.
Ultimately, making the roster as an undrafted free agent is never easy. It requires not only talent, but also consistency, adaptability and the ability to stand out in high-pressure moments. For O’Neill, Lucas and Keanaaina, the opportunity is there. If they can capitalize on it, they could become the next examples of Detroit turning overlooked prospects into meaningful contributors.