The USC Trojans’ offensive unit, which entered the preseason with high expectations, has encountered a significant obstacle just weeks before their August 29 season opener against San Jose State. Starting center Kilian O’Connor has been sidelined for the entire 2026 campaign following a knee injury sustained during a Wednesday practice session, as announced by head coach Lincoln Riley.
Riley characterized the setback as a “freak” non-contact incident, confirming that O’Connor will be unable to participate this year. The loss is particularly heavy for the program given O’Connor’s impressive ascent within the depth chart, moving from a walk-on participant to a pivotal starter and veteran leader.
According to Riley, the news was emotionally difficult for the locker room. He noted that O’Connor has evolved into a vital leader and a central figure within the team’s culture, making his absence felt beyond just the tactical execution on the field.
Recognition and the Road to the Starting Lineup
The timing of the injury is especially poignant, as the Rimington Trophy—an honor reserved for the top center in college football—had included O’Connor on its prestigious watch list the very morning of the incident.
O’Connor first joined the program as a walk-on in the 2022 class. Through consistent development and perseverance, he earned a starting role during the Las Vegas Bowl at the conclusion of the 2024 season. By the start of the following camp, he had outperformed transfer talent to secure the starting job permanently, starting the first five games of the previous season before being slowed by separate injury concerns.
Addressing Depth Challenges on the Offensive Line
While there was optimism that USC could field the same starting five as they did last season, this injury forces an immediate recalibration. The Trojans must now look to their reserves to stabilize the center position before the first whistle of the season.
Current internal options include moving guard Tobias Raymond over to center, leveraging his experience to provide immediate stability. The coaching staff is also evaluating younger talent, specifically redshirt freshman Willi Wascher and true freshman Kannon Smith. Both players entered the program as three-star prospects and will now likely see their development fast-tracked to provide necessary depth in the trenches.
Statistical Performance and Remaining Line Stability
The Trojans are no strangers to shuffling their front five. Last season, the team utilized seven different starting combinations due to various availability issues. Despite this lack of continuity, the group remained highly effective at protecting quarterback Jayden Maiava. USC finished the season ranked 14th nationally in pass protection, conceding only 1.15 sacks per game. The run game also flourished, with the line opening lanes for an average of 169.5 yards per game and a robust 5.15 yards per carry.
Despite the change at center, USC maintains high-level talent across the rest of the line. The tackle positions appear particularly strong, with Elijah Page returning to protect the blind side at left tackle and Justin Tauanuu back to anchor the right side.
As the Trojans prepare to navigate this roster change, they remain a top-tier contender, recently debuting at No. 14 in the preseason USA Today Coaches Poll.
Summary of USC’s Path Forward
The loss of Kilian O’Connor is a significant blow to the heart of the USC offense, both in terms of veteran experience and leadership. However, the Trojans have a history of maintaining elite production despite lineup volatility. With established stars at the tackle positions and several versatile candidates vying for the vacancy at center, the team’s ability to adapt will be tested immediately. How quickly the new center can build chemistry with the rest of the unit will be a major storyline to watch as USC prepares for its climb in the national rankings.
