Los Angeles Chargers quarterback Justin Herbert is hit by New Orleans Saints defensive tackle Bryan Bresee (90) and safety Jordan Howden (31) in the first half of an NFL football game in Inglewood, Calif., Sunday, Oct. 27, 2024. (AP Photo/Ryan Sun)

New Orleans lost a fumble, committed a critical defensive penalty and threw an interception in the first three quarters, leading to 17 points for the opportunistic Chargers in their second preseason game. And a run defense that the Saints desperately want to shore up allowed 148 yards and two touchdowns on 4.4 yards per carry.

Los Angeles hosts a New Orleans team featuring its former offensive coordinator Sunday. Here's everything to know ahead of kickoff of Saints-Chargers.

New Orleans Saints rookie quarterback Tyler Shough had a "welcome to the NFL" moment in his preseason debut when Los Angeles Chargers rookie Eric Rogers intercepted a Shough pass and scampered 43 yards for a pick-six.

In May, Saints coach Kellen Moore made a prediction regarding the team's three-way quarterback competition. "One of these guys will rise," Moore said. During the preseason opener, none of the trio of candidates took a firm hold on the job.