Rob Leonard’s defense finally hit a wall in Week 4, and the Raiders felt every bit of it in a 30-27 loss to the Chiefs.
For the first three weeks of the 2026 NFL season, Las Vegas had been riding its defense as the main attraction. Sunday in Kansas City was a different story.
The unit that had spent September looking nearly untouchable looked a lot more ordinary against a Chiefs offense built to punish mistakes. Still, this wasn’t the kind of performance that should send anyone spiraling about Leonard’s future after one rough outing and three strong ones.
The problem was that the bad moments were loud. Kansas City ripped off 177 rushing yards on only 25 carries, a scorching rate over 7.0 yards per attempt. The Chiefs also hung 30 points on the Raiders, a season high, while Patrick Mahomes was pressured but not taken down often enough, finishing with just 2.0 sacks allowed and 17 total pressures against him.
Leonard’s aggression also backfired at the worst possible times. According to analyst Ryan Paganetti, Las Vegas made costly mistakes on three Cover 0 calls, and those snaps turned into a 41-yard completion, a 55-yard completion and a touchdown.
Blitzing Mahomes with no safety help is already a dangerous game; asking Eric Stokes and Treydan Stukes to survive one-on-one against Xavier Worthy and Tyquan Thornton with nothing behind them was even tougher. The Chiefs cashed in.
There was also the 76-yard run, a play that summed up how quickly things can unravel. Maxx Crosby came off the field for one snap, Kansas City attacked the spot he usually occupies, and the Raiders paid for it. That’s the kind of opening opponents notice immediately.
Then came the finish. After shutting out their previous three opponents in the fourth quarter, Las Vegas gave up 20 points in the final period. Reid simply had more answers than Leonard did, and the Raiders’ young defensive coordinator looked outmatched as the game tilted away.
Even so, this wasn’t a total wipeout. Some of the damage can’t be pinned on Leonard.
Nakobe Dean took a bad angle and got tangled in the chaos instead of fitting the run correctly on the explosive Kenneth Walker III play. And when Dareke Young fumbled deep in Raiders territory, the defense inherited a mess.
That turnover could have become only three points for Kansas City instead of seven, and it was a momentum swing.
For long stretches, especially before the fourth quarter, the defense did enough to keep Las Vegas in range. The Chiefs managed only 10 points through the first three quarters. If the Raiders’ offense had finished more drives, the game might have looked very different.
The numbers also soften the edge a bit if you strip out the explosive run. Without the 76-yard burst, Kansas City had 101 rushing yards on 25 carries, which is just over 4.0 yards per attempt.
Walker III also forced just five missed tackles, far below the 11-plus he had been averaging before the game. Las Vegas still had issues wrapping up, but it also produced a few key run stuffs that helped cover for the special teams breakdowns.
The secondary had some positives too. Outside of the big plays, the Raiders logged five pass deflections and held Mahomes to 225 passing yards on a 50.0% completion rate, his lowest mark of the season by a clear margin.
The issue wasn’t that the defense was bad on every snap. It was that the biggest snaps went Kansas City’s way.
Pressure on Mahomes never reached a dominant level, but it wasn’t absent either. Against an all-time great play-caller and a quarterback who can turn a breakdown into a backbreaker, Leonard’s group had moments. The grade still lands below average, just not in the territory of a full-blown disaster.
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