KANSAS CITY CHIEFS QUARTERBACK Patrick Mahomes (center) fumbles the ball as he is sacked by Los Angeles Rams defensive end Aaron Donald (lower right) next to Chiefs offensive guard Cameron Erving (75) during the first half of an NFL football game Monday in Los Angeles. Rams outside linebacker Samson Ebukam (not shown) recovered the fumble and scored a touchdown on the play.

LOS ANGELES — Jared Goff threw a 40-yard touchdown pass to Gerald Everett for the go-ahead score with 1:49 to play, and the Los Angeles Rams outlasted the Kansas City Chiefs for a 54-51 victory on Monday night in a high-octane NFL offensive showdown that somehow surpassed the hype.

Patrick Mahomes threw six touchdown passes in his latest jawdropping performance for the Chiefs (9-2), but he also threw two interceptions in the final 1:18 as the Rams (10-1) claimed the highest-scoring Monday night game ever played and the first NFL game with two 50-point performances.

Goff passed for 413 yards and four touchdowns, while Marcus Peters and Lamarcus Joyner came up with late interceptions as the Rams hung on.

The highest-scoring game in the league this season was an offensive fantasia featuring 1,001 combined yards and ingenious scheming from mastermind coaches Andy Reid and Sean McVay — along with three defensive touchdowns and 21 combined penalties.

“It was a whirlwind,” McVay said. “I feel like I might need a couple of beverages to relax tonight, but it was great. This is what you love so much about the game.”

The Coliseum’s first Monday night game since 1985 was worth the wait — and if this fascinating spectacle turns out to be a Super Bowl preview, Atlanta should prepare for

an All-Madden-level show from two of the most exciting teams in the league.

“It was one of the most competitive games I’ve been a part of,” McVay said. “It was just a competitive game with a lot of high-caliber football in all three phases.”

Rams linebacker Samson Ebukam returned a fumble and an interception for the first two TDs of his NFL career, while Kansas City’s Allen Bailey returned Goff’s fumble for a go-ahead touchdown early in the fourth quarter.

The second half was an extended thriller featuring 59 combined points, but the Rams made slightly more big plays down the stretch.

After Goff led a 75-yard scoring drive in 89 seconds for the go-ahead TD to Everett, former Kansas City cornerback Marcus Peters intercepted Mahomes’ underthrown ball near midfield with 1:18 to play.

The Rams only managed to get 14 seconds off the clock on their next three plays, and the Coliseum roiled in anticipation of a big finish by Mahomes.