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The Mac Attack: 49ers Gut Out a Signature Rivalry Win

Hunter Tierney 's profile
By Hunter Tierney
October 3, 2025
The Mac Attack: 49ers Gut Out a Signature Rivalry Win

Some Thursday nights just hit different. You flip on the TV expecting a one-sided affair, and instead you get a game that feels bigger than the box score. That’s exactly what happened with the 49ers in L.A. Short week, half the roster taped together, and a backup quarterback running the show against a Rams team that looks like the real deal.

If you’re a Niners fan, you probably just wanted to get out alive. (And I'm not sure they did as well as they hoped to on the injury front.) But, San Francisco didn’t just hang around — they matched the Rams punch for punch, slowed the game down to their pace, and came up clutch when every inch mattered. That wasn’t luck. That was an identity showing up under the lights.

Against All Odds

On paper, this one looked like a mismatch. The Rams were more than a touchdown favorite at home, and the 49ers rolled into SoFi missing almost everyone you’d put on a poster. Brock Purdy? Out. George Kittle? Out. Nick Bosa? Out. Ricky Pearsall, Jauan Jennings? Also out. Brandon Aiyuk? Still sidelined.

The Backup Who Didn’t Blink

Oct 2, 2025; Inglewood, California, USA; Prime Thursday Night Football sideline reporter Kaylee Hartung (left) interviews San Francisco 49ers quarterback Mac Jones (10) after the game against the Los Angeles Rams at SoFi Stadium.
Credit: Kirby Lee-Imagn Images

Mac Jones didn’t just keep the seat warm — he put on a performance nobody outside that locker room saw coming. He dropped back nearly fifty times, connected on 33 throws for 342 yards and two touchdowns, and the biggest number of all? Zero turnovers. For a guy parachuting into a short week against a defense that loves to heat you up, that’s the stuff coaches circle in red.

What really stood out wasn’t a string of highlight bombs, it was how calm he looked running the show. Jones ran the short game like a point guard spraying passes around the court — slants, sticks, flats, angle routes, all the bread‑and‑butter Shanahan calls. He strung first downs together, kept his linemen from living in obvious pass sets, and helped the Niners own the ball for over forty minutes. The best way to keep Matthew Stafford from carving you up is to make him stand on the sideline.

And the best part? It didn’t feel forced. Shanahan basically told him, “let it rip,” but it never looked reckless because the design gave him clean answers. To the casual fan it might look boring. To coaches, it was a clinic in rhythm and playing on time.

Tone‑Setter: Owning the First Quarter

The first fifteen minutes weren’t just good football, they were a flat‑out statement. San Francisco out‑gained the Rams 140–7 in the opening quarter, hogged the ball for nearly twelve minutes, and picked up first downs like they were free samples at Costco. 

  • Drive 1: 8 plays, 72 yards, touchdown. Balanced, smooth, nothing that made Mac Jones break a sweat.

  • Drive 2: 17 plays, 91 yards, another touchdown. Eight minutes of torture for the Rams’ sideline, and a dream scenario for Shanahan’s script.

By the time the second quarter rolled around, you could feel the Niners weren’t chasing fireworks. They were happy to squeeze the game to death with patient runs, force the Rams to actually tackle over and over, and make L.A.’s stars sit there watching. It wasn’t sexy, but it was suffocating — and exactly how you take the shine off a supposed heavyweight.

The Rams Woke Up… and Then Beat Themselves

Oct 2, 2025; Inglewood, California, USA; Los Angeles Rams wide receiver Puka Nacua (12) makes a catch past San Francisco 49ers defensive tackle Sam Okuayinonu (91) during the second half at SoFi Stadium.
Credit: Gary A. Vasquez-Imagn Images

Credit where it’s due: Matthew Stafford battled. He went 30‑for‑47 for 389 and three touchdowns, and he did it against a defense that made him earn every yard. San Francisco played a ton of two‑high and just rallied up to make tackles. 

Puka Nacua was his usual self — 10 for 85 and a score —and he set an NFL record with 52 receptions through his team’s first five games of a season. That’s not just volume, that’s crazy consistency. Kyren Williams chipped in with two receiving touchdowns, flashing the versatility that makes him such a problem in space. There were stretches in the second half where L.A. honestly felt like the team more likely to land the knockout blow.

The Rams never got out of their own way. They’ll spend the week groaning about all the little things that piled up into a big problem.

  • Missed 53‑yarder to start the third quarter — a gut punch right when they needed a spark.

  • Blocked PAT late — credit Jordan Elliott for timing it perfectly — but that's the third blocked kick that this unit has had, and it's still the first week of October.

  • Two brutal fumbles, both deep in enemy territory: the first on a toss to Blake Corum, the second an absolute dagger at the goal line when Kyren Williams coughed it up with 1:07 left in regulation.

You can live with one mistake. Two or three like that? Against a team that doesn’t beat itself? That’s a loss waiting to happen. Turnovers flip wins into losses in this league.

A Fourth‑and‑One the Rams Want Back

Down three in overtime, Sean McVay marched the Rams to the 11, then ran into the kind of decision that coaches get asked about for a week. Do you trust your kicker and extend the fight, or do you lean into your swagger and try to knock the 49ers out right there?

McVay chose door number two. Fourth‑and‑1. Go win it.

I’ll never fault the mindset. One yard and you’ve got first‑and‑goal with Stafford humming, Puka being Puka, and Davante Adams one matchup away from stealing headlines. Fans love it. Players love it. Aggression usually ages well.

But it was the play call itself, not the decision, where the air went out. Heavy set, downhill run to Kyren Williams, no window dressing, nothing to make San Francisco hesitate. The 49ers read it like a kid’s bedtime story. Marques Sigle and Deommodore Lenoir shot through, Fred Warner detonated the pile, and Kyren barely had time to gather the handoff before he was swallowed up.

McVay admitted it right after:

“It's a bad call. It's a bad call by me... Play selection was very poor. I’m sick right now because I put our guys in that spot.”

When you need just a yard, show the defense something that makes them hesitate — jet motion, orbit action, sneak, even a quick RPO that puts a nickel in space. Instead, San Francisco’s defense never had to blink. They just triggered and buried it.

That was the ballgame. One snap, one yard, and one play call the Rams will stew over for a long time.

The Quarterback Conversation You Knew Was Coming

Dec 22, 2024; Miami Gardens, Florida, USA; San Francisco 49ers quarterback Brock Purdy (13) throws the football against the Miami Dolphins during the fourth quarter at Hard Rock Stadium.
Credit: Credit: Sam Navarro-Imagn Images

I’ve got to admit when I was wrong. I was firmly in the camp that Mac Jones wasn’t anywhere near Brock Purdy’s level. But after this? It's pretty hard to make that argument. He's 3‑0 as a spot starter, the ball is coming out on time, and the locker room clearly vibes with him. This is San Francisco, where quarterback conversations grow like weeds, and you can already hear the talk shows warming up the “controversy” talks.

Brock Purdy is still the starter when he’s healthy. Full stop. He’s earned that, and the staff believes in him. But Mac at the very least proved he deserves another real shot somewhere in this league. It also naturally tightens the reins in San Fransico as well. That doesn’t have to be drama. It’s a luxury. It means you don’t have to push a toe injury on a short week. It means you can pick matchups, trust your plan, and let the locker room breathe knowing the backup can actually go win games.

A Rivalry Turned Up a Notch

When you strip away the noise, Thursday night was proof that the 49ers are more than just a collection of stars. They can win ugly, they can lean on a backup quarterback, and they can find ways to finish when the game shrinks to one or two plays. That’s the kind of win that makes a locker room believe even more in who they are. 

For the Rams, it’s one they’ll replay in their heads for weeks. They had the talent, they had the chances, but they didn’t protect the football or make the right call when it mattered most. That doesn’t erase how dangerous they can be going forward, but it does remind everyone that in the NFC West, the margins are razor thin. If San Francisco can do this shorthanded, imagine what they’ll look like closer to full strength.

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