It appears as if Jon Gruden’s tough love to his backup quarterbacks is effective.

On HBO’s “Hard Knocks with the Oakland Raiders, Gruden ranted about his backup quarterbacks and their lack of killing instinct, saying “I can’t even look at the guy,” after Mike Glennon thew two interceptions.

Glennon must have watched that and listened to his coach, because he went on a tear against the Arizona Cardinals in a preseason Week 2 33-26 win.

After Derek Carr played a bit and left, Glennon stepped in and proceeded to hit 11 of his 14 passes for 175 yards and two touchdowns. Though he missed tight end Darren Waller on what would have been a wide-open touchdown on the first drive, he left the game with every observer being thoroughly impressed.

Glennon hit a 53-yard pass to speed merchant Rico Gafford, leading the receiver to the post with a perfectly thrown ball off play-action.

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Then, he found the end zone for a second time on a well-thrown touch pass to Derek Carr; a tight end running a fade route to the corner.

All in all, the game ball should go to Glennon — now a sixth-year veteran — but all three quarterbacks who took the field played well against the Cardinals. The starter, Derek Carr, threw just two passes, but he made both, and it was enough for him to wind up with 40 yards and a touchdown to Ryan Grant.

Carr’s other pass was an ultra-contested grab by Tyrell Williams.

As for third-stringer Nathan Peterman, he went 8-for-8 for 41 yards and added three rushes for 13 yards. All told, the three Raider QBs went 21 of 24 for three touchdowns and no interceptions. It is probably more of a commentary on the Cardinals, but the Raiders will still take it.