Goff went 17 of 31 for 372 yards, 273 of which came in the first half. Kupp had 165 receiving yards by halftime and didn’t catch another pass in the final 27 minutes of the game.
It was a second straight win for the Rams (5-3) in London, where they blanked the Arizona Cardinals 33-0 on their previous visit in 2017.
Cincinnati fell to 0-8 for the first time since 2008 and looked no closer to finding a first win under first-year head coach Zac Taylor — a former assistant to Sean McVay with the Rams.
The Bengals managed to keep it close in the first half, mainly thanks to a much-improved run game. But trailing 17-10 near the end of the second quarter, they missed a chance to cut the halftime deficit to four points when Andy Dalton was sacked on third-and-10 at the 30-yard line, taking them out of field-goal range.
Todd Gurley added a 3-yard rushing touchdown to put Los Angeles up 24-10 early in the third quarter as the Rams earned their first win over the Bengals since 2003. They had lost the previous three meetings.
The Rams came up with a stop on fourth-and-goal from the 6-yard line with five minutes left in the fourth quarter to thwart any hopes of a comeback by the Bengals. Auden Tate thought he had caught a touchdown with 4 seconds remaining, but the pass was ruled incomplete after a review.
Dalton finished 32 of 52 for 329 yards and had a 1-yard touchdown pass to Joe Mixon to tie the game at 10-10 in the second quarter.
BEAT THEM ALL
Rams left tackle Andrew Whitworth, who spent his first 11 NFL seasons with the Bengals, became the 12th player to earn a victory as a starter against all 32 NFL teams.
NOT ALL BAD
The only positive for the Bengals is that they may finally have found a running game. Cincinnati entered the game last in the league in rushing but finished with 104 yards on the ground. Of those, 47 came on the 75-yard touchdown drive in the second quarter — including Mixon converting a fourth-and-1 on their 45.
Mixon finished with 66 rushing yards, while Giovani Bernard had 31.
INJURIES
Rams: Wide receiver Brandin Cooks left the game in the first quarter with a concussion after taking an early helmet-to-helmet hit. Cooks was tackled by Jessie Bates III when trying to catch a pass from Jared Goff on the Rams opening drive.
Bengals: Left tackle Cordy Glenn and wide receiver A.J. Green were both inactive again. Glenn and Green have yet to play this season but took part in practice on a limited basis this week. Glenn missed the first six games with a concussion and was suspended for last week’s game against Jacksonville. Green is still recovering from ankle surgery during training camp.
UP NEXT
Bengals: After a bye week, Cincinnati hosts the Baltimore Ravens on Nov. 10.
Rams: Los Angeles gets a week off, then plays at the Pittsburgh Steelers on Nov. 10.