Sometimes, one of the most-talked about plays from a game is one that didn't happen. No, not the Will Johnson interception-negated-by-penalty (although that was popular). In this case, it was the Kyler Murray-to-Marvin Harrison Jr. miss from deep in Arizona territory, a play in which in the moment looked like it could've not only been a big gain but perhaps a 97-yard TD.

The throw from Murray was high and a little behind Harrison, who had moved inside of the defensive back on a post against a Saints two-high safety look. The safety on the other side of Harrison looked like he might have focused on tight end Trey McBride much more shallow, creating a look -- from above at least -- that seemed to open wide for MHJ assuming the connection.

"It was a unique coverage," offensive coordinator Drew Petzing said. "We were backed up. We had a motion on. I'm not sure they adjusted quite the way they wanted to so it was a little bit of a unique angle (Kyler) took on the throw.

"I'm not really sure where the backside safety was. It certainly wasn't where we expected the ball to be caught. It's a play we'd love to make, but I'm not going to say that's a hit-it-every-time-type of opportunity."

Cardinals Hall of Fame quarterback Kurt Warner was asked about the play on Twitter and pointed out that with the safeties playing two-high, the receiver needs to stay "on the frontside where the throw was made."

Petzing was asked if Harrison should've stayed more vertical on the route but Petzing said no. "If he goes vertical he's going to run right into the safety so he did what he needed to do."

But when the follow question was that Kyler then needed to throw a better pass, Petzing subtly deadpanned about the nuance of the play.

"As long you know where the backside safety is on a route you might not be expected to throw there," Petzing said.

A missed opportunity, but one the Cardinals weren't ultimately hurt on missing, and one they can fix for the future.