NFL

Cardinals Upset Chargers in Mike LaFleur’s Coaching Debut

  • Authored By: Sports Now
  • Updated Sep 14, 2026, 07:57 IST

The Arizona Cardinals secured a 26-14 victory over the Los Angeles Chargers, marking a significant Week 1 upset and a successful head-coaching debut for Mike LaFleur at SoFi Stadium.

Cardinals Upset Chargers in Mike LaFleur’s Coaching Debut

The Arizona Cardinals delivered a statement performance on Sunday, securing a 26-14 victory over the heavily favored Los Angeles Chargers at SoFi Stadium. The win served as a major upset to open the NFL season, defying the odds and setting a positive tone for the team's campaign under new leadership.

For head coach Mike LaFleur, the result was particularly significant as he became the first full-time Cardinals coach to win his debut since Don Coryell achieved the feat in 1973. Despite the historical milestone and the magnitude of the upset, LaFleur remained focused on the team's internal process rather than external expectations or betting lines.

Defying the Odds in Inglewood

Entering the matchup as 8.5-point underdogs, the Cardinals defied expectations to claim their most notable upset since Week 17 of the 2023 season, when they defeated the Philadelphia Eagles. According to historical data, this victory stands as the largest Week 1 upset in the NFL since 2018. Furthermore, Arizona became the first team with a preseason win total of 3.5 or lower to secure a victory in their opening game since at least 1990.

The betting market has already begun to shift in response to the performance, with Arizona’s odds to win the NFC West shortening from +10000 to +4500. Despite the sudden attention, LaFleur emphasized that the team remains grounded. He noted that in the NFL, humility is always just a day away, and the squad is committed to resetting and continuing their preparation for the challenges ahead.

A Focus on Process Over Results

While the victory marked a personal milestone for the first-year head coach, LaFleur maintained an indifferent stance toward his own achievement, choosing instead to credit the dedication of his players. He stressed that the organization is prioritizing a consistent work ethic over being strictly results-oriented, aiming to maintain a steady internal focus regardless of outside noise.

Quarterback Jacoby Brissett echoed the sentiment of the locker room, expressing the team's collective desire to support their new coach. Brissett confirmed that securing a win for LaFleur in his first game was a meaningful objective for the players. As the team looks forward, LaFleur reiterated that the focus remains on the daily grind, stating that while he understands the league is results-based, the team's primary goal is to trust their training and continue the work they have established in the building.