Chiefs triumph in Super Bowl rematch vs. 49ers, are last unbeaten team in NFL this season - Yahoo Sports

A rematch of the reigning conference champions concluded its script as the Super Bowl between them eight months ago did: with a Kansas City Chiefs win.

The Chiefs defeated the San Francisco 49ers, 28-18, to improve to 6-0 for the first time in Patrick Mahomes’ decorated career.

Brock Purdy and his injury-laden receiving group fell to 3-4, overwhelmed by the Chiefs’ blitzing scheme.

Each team started chaotically on a dangerous day for the passing game, with Purdy and quarterback Patrick Mahomes combining for zero passing touchdowns and five interceptions.

Mahomes rushed for the game-sealing touchdown while Purdy rushed for two scores himself, including a 1-yard touchdown with 1:08 to play that might have sparked a last comeback chance if the 2-point conversion attempt had worked.

But it didn't, and San Francisco will mull this loss while determining the severity of their latest skill player injury.

Brandon Aiyuk’s right knee collapsed from the impact of a tackle on a 15-yard catch in the final minute of the first half. He grimaced as he was carted off, soon ruled out to join Deebo Samuel Sr. (illness), Christian McCaffrey (calf/injured reserve) and Jauan Jennings (hip) as unavailable.

After the game, 49ers head coach Kyle Shanahan said the team feared Aiyuk suffered an ACL injury.

Purdy had bright spots with his cast of second- and third-string receivers, but the Chiefs’ swarming front seven severely disrupted San Francisco’s offensive rhythm, limiting the Niners to 2 of 11 on third down.

Three plays after Purdy nailed Jacob Cowing 41 yards downfield in the fourth quarter, Chiefs edge rusher George Karlaftis hit Purdy’s arm contributing to an end-zone interception with 9:34 to play.

The Chiefs bled the clock and the 49ers’ chances with a lengthy scoring drive that sealed their win — and preserved their unblemished record.

After the 49ers went three-and-out to start the game, San Francisco snuffed out a fake-punt attempt, stopping the Chiefs a yard short on fourth-and-2. But the Niners' momentum was short-lived when, a snap later, Purdy dropped back with Karlaftis closing in, and 11 yards downfield safety Justin Reid snagged the pass intended for George Kittle.

Four more total interceptions would follow.

Mahomes’ first came on the following series, when defensive tackle Kalia Davis tipped and then snagged his pass on second-and-15.

The 49ers capitalized on the turnover with the first points of the day, a 55-yard field goal thanks in part to a pass interference flag Reid drew.

But as the Niners failed to find the end zone throughout the first half, the Chiefs levied trick plays and Xavier Worthy end-arounds, Mahomes defensive diagnoses and Mahomes physics so unusual that Tom Brady wondered on the broadcast if Bill Belichick was at home “ripping out his hair” watching Mahomes break “every quarterback rule I learned.”

No matter: Mahomes did enough to get the Chiefs to the red zone five times, running back Kareem Hunt rushing for each of the Chiefs’ first two touchdowns.

Tight coverage limited Purdy’s targets while unblocked blitzers rushed his mechanics, neutralizing third-down attempt after third-down attempt.

The 49ers’ brightest spot of the first half was receiver Ricky Pearsall catching a 6-yard pass with 1:32 to play in the first half, less than two months after the rookie was shot in an alleged armed robbery attempt. It was Pearsall's regular-season debut.

Whether that juiced the 49ers directly or the timing was coincidental, Purdy completed his next three straight passes — a 41-yarder down the left sideline to Kittle, a short pass to Jordan Mason and then a 15-yarder to Aiyuk.

But Aiyuk’s knee buckled on the play, his last action of the day. The 49ers’ field goal before halftime narrowed their deficit to one score. But they’d never catch the Chiefs.

The 49ers opened the second half with a level of resolve their day’s fortune didn’t guarantee. When Worthy, the Chiefs' first-round rookie receiver, slipped on a corner route after Mahomes had released his pass, 49ers defensive back Deommodore Lenoir capitalized for the interception. When the passing game continued to struggle, Purdy scrambled for 9 yards on third down and then the quarterback keeper on fourth-and-1.

That would set up San Francisco’s first touchdown, a Purdy sneak featuring three tight ends and two pulling right guards with 10:29 to play in the third.

“That was pretty sick,” Brady raved of the play’s design.

A seeming miscommunication between Purdy and a flatter-than-the-throw Ronnie Bell gave the Chiefs their second interception. The Chiefs marched down the field courtesy a mix of run and pass plays highlighted by Mahomes scrambling up the left sideline on second-and-7, pump-faking and directing his eyes to alleged threat areas sufficiently to somehow pick up 33 yards.

On fourth-and-goal, Mahomes finished the job. He looked left to gauge Kelce’s availability then decided to take it in himself. A game-icing touchdown would follow, but Mahomes’ fourth-and-goal score was already enough.

Mahomes completed 16 of 27 passes for 154 yards and two interceptions, rushing five times for 39 yards and a touchdown. Hunt led Chiefs skill players with 78 yards and two touchdowns on 22 carries.

Purdy completed 17 of 31 passes for 212 yards and three interceptions, carrying eight times for 27 yards and two touchdowns.

Kittle led all skill players with 92 yards on six catches.