The Kansas City Chiefs improved to 6-0 on the season with a victory over the San Francisco 49ers on Sunday afternoon.

Here are some quick notes from the win.

1. The Chiefs' defense has held each of its last four opponents under 20 points.

Kansas City has objectively been the league's best defense over the last two seasons, and the numbers back that up. In fact, the Chiefs have held the opposition under 28 total points in 27 consecutive games, marking the longest streak for any team since the 2005-07 Baltimore Ravens compiled a 29-game streak.

Additionally, the Chiefs have held their last four opponents under 20 points, yielding an average of just 14.5 points-per-game in that span.

The Chiefs held San Francisco, which entered Sunday's game as the No. 2 total offense in the NFL, to just 18 points and a 2-for-11 mark on third down. The 49ers' 18% conversion rate on third down was their worst in a game since Week 3 of the 2022 season.

2. Kansas City picked off 49ers' quarterback Brock Purdy three times.

A key component of the Chiefs' stellar defensive performance on Sunday was a season-high three takeaways. They were all critical, too, as each of Kansas City's three interceptions took place in its own territory.

The Chiefs' first pick, courtesy of safety Justin Reid, occurred immediately following a turnover-on-downs that briefly provided the 49ers with ample momentum early in the game. Rookie cornerback Christian Roland-Wallace was then responsible for the Chiefs' second pick, which thwarted another 49ers' series and directly set up a touchdown drive by Kansas City.

Rookie safety Jaden Hicks later completed the hat trick with an interception in the end zone that maintained Kansas City's nine-point lead and essentially secured the victory.

The performance marked the Chiefs' first game with three or more interceptions since Week 4 of the 2020 campaign. Purdy, meanwhile, posted the lowest single-game passer rating (36.7) of his career.

3. The defense tallied six quarterback hits on Brock Purdy.

Kansas City created plenty of pressure on Purdy throughout the matchup, and while the Chiefs came away with only one sack to show for it, their efforts certainly impacted the game.

Notably, defensive end George Karlaftis hit Purdy mid-throw late in the game, causing an errant pass that Jaden Hicks then secured for an interception in the end zone.

In terms of the advanced metrics, Purdy was just 2-of-8 for 2 yards and two interceptions when pressured on Sunday (12 times). Karlaftis led Kansas City with five individual pressures.

4. The Chiefs rushed for 184 yards on Sunday.

Seven players combined for a season-most 184 rushing yards on Sunday, which marked the Chiefs' most in a single game since Week 4 of the 2023 season (204 against the Jets).

The bulk of that production came from tailback Kareem Hunt, who rushed for 78 yards and two touchdowns on 22 attempts. Hunt now has 249 rushing yards and three scores in three games with Kansas City.

Additionally, the Chiefs' final scoring drive (which spanned 12 plays) consisted of 10 runs. Hunt (14 yards on 4 carries), tailback Carson Steele (11 yards on 3 carries), tailback Samaje Perine (6 yards on 2 carries) and wide receiver Mecole Hardman (18 yards on 1 carry) each contributed to that effort. Kansas City only threw the ball twice on the drive, both of which ended in third-down conversions.

5. Wide receiver Mecole Hardman had a productive day on offense and special teams.

Hardman impacted Sunday's game in a variety of ways, tallying one catch for 17 yards, two rushes for 38 yards (and a touchdown), plus a 54-yard punt return that set up one of Kareem Hunt's two scores.

In total, Hardman tallied 110 all-purpose yards while becoming the first player since the 2020 season to record 15+ rushing yards, 15+ receiving yards and 50+ punt return yards in a single game. The last player to do it was running back Nyheim Hines.

6. Overall, the Chiefs' offense was 4-for-5 in terms of red zone touchdown efficiency.

The Chiefs entered Sunday's matchup averaging 355 offensive yards-per-game, but a lackluster showing in the red zone had often prevented Kansas City from putting together big performances on the scoreboard. Fortunately, that all changed on Sunday.

Kansas City was 4-for-5 in the red zone against San Francisco, as Kareem Hunt (2 touchdowns), Patrick Mahomes (1 touchdown) and Mecole Hardman (1 touchdown) helped turn red zone possessions into touchdowns.

7. Tight end Noah Gray had the top statistical game of his career.

Gray hauled in four catches for a career-best 66 yards on Sunday, which included a nine-yard catch that moved the chains on third down during the Chiefs' final scoring drive.

The veteran tight end tallied a 26-yard catch early in the game and back-to-back receptions (of 11 and 20 yards, respectively) that set up a touchdown a bit later. He then put a bow on his performance with the aforementioned third-down grab late in the game.

Gray now has 14 catches for 185 yards on the season. He's already halfway to his career-best in receptions (28 in 2022 and 2023) and just 120 yards shy of his career mark for receiving yards (305 in 2023).

8. Punter Matt Araiza averaged nearly 60 yards-per-punt on Sunday.

Araiza was nothing short of incredible on Sunday, launching punts of 48 yards, 64 yards and 67 yards on the afternoon. His 64-yard punt marked a career-best until he topped it with a 67-yard boot just a little bit later.

The 24-year-old Araiza leads the NFL with a 52.3 yards-per-punt average, and half of his 16 total punts have landed inside the opposition's 20-yard line.

9. Head Coach Andy Reid improved to 22-4 following the bye week in his career.

Reid's prowess following the bye week is the stuff of legend, and that mystique only grew on Sunday. In fact, Reid is now a ridiculous 22-4 following the bye week in his career, which equals out to a .846 winning percentage.

That's the best winning percentage following the bye week for any head coach since the bye was reintroduced in 1990 (min. 10 games). The next closest is the Baltimore Ravens' John Harbaugh, who owns a 13-3 career record after the bye.

Reid is now 9-3 following the bye week with Kansas City.

10. The Chiefs are the last remaining unbeaten team in the NFL.

Kansas City moved to 6-0 on Sunday, and paired with the Minnesota Vikings' loss earlier in the afternoon, the victory meant that the Chiefs will enter Week 8 as the lone remaining undefeated team in the NFL.

The Chiefs are off to a 6-0 start for the first time since 2013, and they'll look to make it 7-0 with a divisional matchup against the Las Vegas Raiders now on the horizon.