NFL Defensive Stars Poised for Breakout Seasons

By Jason Bolton June 21, 2025 19:32

As the 2025 NFL season approaches, several defensive players are primed to elevate their games and emerge as stars. With new coaching schemes, increased opportunities, and natural progression, these defenders could significantly impact their teams and the league. Here’s a look at some of the most promising defensive breakout candidates heading into the new season.

J.T. Tuimoloau, Defensive End, Los Angeles Chargers

Tuimoloau showed flashes of brilliance in his sophomore season, compiling 43 pressures and ranking second on the Chargers in pass-rushing snaps. Despite a 30.1% missed tackle rate the fourth-worst among qualified edge defenders his 64.8 PFF pass-rushing grade and 13.4% pass-rush win rate signal a player on the cusp of a breakout. With Joey Bosa’s injury history leaving a void, Tuimoloau has the chance to cement himself as a legitimate starter and a consistent disruptive force in 2025.

Omar Speights, Linebacker, Los Angeles Rams

Undrafted free agent Omar Speights was a revelation in 2024, posting a 69.4 overall PFF grade and an impressive 77.6 run-defense grade. His 5.1% missed tackle rate was among the lowest for linebackers, showcasing his reliability and tackling prowess. Speights’ rapid acclimation to the NFL and increased snap count suggest he could become a centerpiece of the Rams’ defense and one of the league’s emerging linebackers.

Jessie Bates III and Nolan Watts, Safeties, Atlanta Falcons

Atlanta’s defense has struggled in recent years, but the emergence of ballhawking safeties Jessie Bates III and rookie Nolan Watts offers hope. Watts, who transitioned from wide receiver in college, recorded 13 interceptions over the past two seasons at Notre Dame and brings a “serious demeanor and mindset” similar to Bates, according to Falcons coach Raheem Morris. The tandem could transform Atlanta’s secondary into a formidable unit capable of forcing turnovers and shifting momentum.

Zyon McCollum, Cornerback, Tampa Bay Buccaneers

Veteran linebacker Lavonte David recently highlighted McCollum as a player ready to take his game to another level. McCollum has shown flashes of high-level play, and his work ethic and willingness to learn have impressed coaches and teammates alike. With Tampa Bay’s defensive front improving, McCollum could benefit from increased pressure on opposing quarterbacks, allowing him to capitalize on coverage opportunities.

Calijah Kancey and Yaya Diaby, Defensive Line and Outside Linebacker, Tampa Bay Buccaneers

Alongside McCollum, defensive lineman Calijah Kancey and outside linebacker Yaya Diaby are also poised for breakout seasons. Both players have demonstrated growth and a commitment to excellence, with David noting their readiness to “turn it up a notch.” Their continued development will be crucial to Tampa Bay’s defensive resurgence.

Michael Mayer, Tight End, Las Vegas Raiders (Defensive Impact via Offensive Role)

While primarily an offensive player, Mayer’s blocking ability and physicality contribute to defensive success by enabling better run defense and pass rush opportunities. His expected breakout in 2025 could indirectly bolster the Raiders’ defensive efficiency, underscoring the interconnected nature of football units.

Other Notables to Watch

Seattle’s rookie defensive tackle, a 2024 first-round pick, is expected to take a significant leap in his second year under coach Mike Macdonald’s system. His flashes as a rookie hint at a dominant force in the making, potentially anchoring one of the league’s best defenses in 2025.

The 2025 NFL season promises to showcase a new wave of defensive stars ready to make their mark. Players like J.T. Tuimoloau and Omar Speights are set to become household names, while safeties Bates and Watts could revitalize struggling secondaries. Tampa Bay’s young defenders also have the potential to elevate their team’s defense significantly. As teams continue to emphasize defense in roster building, these breakout candidates will be pivotal to their squads’ success and could redefine the defensive landscape in the coming year.