In 2007, ESPN.com ranked the 1975 Rams as the tenth-greatest defense in NFL history. Said ESPN.com, "Fred Dryer. Jack Youngblood. Merlin Olson. Get the idea? They weren't the "Fearsome Foursome," but with those guys anchoring the defensive line, and All-Pros Isiah Robertson (linebacker) and Dave Elmendorf (safety), the Rams were almost impossible to score against. The Rams went 12–2, holding opponents to just 9.6 points a game, (the second-lowest average in NFL history) and ending the season with a six-game winning streak during which they gave up just 32 points. The defense wasn't as impressive in the postseason, surrendering 23 points in a first-round 35–23 victory over the offensive powerhouse Cardinals before losing 37–7 to the Cowboys in the NFC title game."
A supposedly-rebuilding Cowboys team shocked the heavily favored Rams in this opener. The new-look "Doomsday Defense" held James Harris to 1-of-10 passing for five yards and picked off three passes. Toni Fritsch kicked four field goals.
Rams looked on the verge of starting the season 0–2, falling behind 14–3 at the half. However, they took control as rookie CB Monte Jackson recovered a blocked punt for one touchdown and Harris passed for another. Club-footed kicker Tom Dempsey's 51-yard FG put the Rams ahead to stay.
For the second straight game, this time at home, the Rams fell behind at the half and had a strong second half. Harris passed for 294 yards and two touchdowns and Lawrence McCutcheon ran for 95 yards and another TD.
Dominant road performance. Rams ran up 415 yards of offense and Harris passed for three TD's. Fred Dryer and Isiah Robertson both returned interceptions for TD's as well.
November 9, 1975
San Francisco 49ers
Rams went up 14–0 in the first quarter at home and appeared to be cruising. However, 49ers QB Steve Spurrier shocked the L.A. Coliseum crowd with three second half TD passes and a game-winning drive that ended with a 54-yard FG by Steve Mike-Mayer.
November 16, 1975
at Atlanta Falcons
Harris passed for 242 yards and a TD and Dempsey had three FG's as Rams got back on winning track on the road.
In what most football experts thought would be a Super Bowl X preview, the Rams won a tight defensive struggle. The defense held the defending champs to only five pass completions and picked off three passes. Jaworski scored the winning TD in the 4th on a run.