The 1970 Kansas City Chiefs season was the franchise's debut season in the National Football League, the 8th as the Kansas City Chiefs, and the 11th overall. It began with the Chiefs attempting to defend their Super Bowl IV championship title but ended with a 7–5–2 record and missed the playoffs for the first time since 1967.

Following their championship success, the Chiefs traded running back Mike Garrett, who was the club's all-time leading rusher at the time, to San Diego after a week 3 loss in Denver, and replaced him in the lineup with Ed Podolak. Despite a 44–24 win against soon to be Super Bowl V Champion Baltimore on September 28 in just the second-ever telecast of ABC's Monday Night Football, the Chiefs owned a 3–3–1 record at the season's midpoint.

One of the season's pivotal junctures came in a 17–17 tie against Oakland on November 1. The Chiefs were ahead 17–14 when Len Dawson apparently sealed the win, running for a first down which would have allowed Kansas City to run out the clock. While on the ground, Dawson was speared by Raiders defensive end Ben Davidson in an infamous incident that cost the Chiefs a victory and further inflamed the already heated Chiefs–Raiders rivalry. Wide receiver Otis Taylor retaliated and a bench-clearing brawl ensued. Offsetting penalties were called, nullifying Dawson's first down. The Chiefs were forced to punt and Raiders kicker George Blanda eventually booted a game-tying field goal with eight seconds remaining. Following the tie with Oakland the Chiefs' defense would permit only 43 points over the next 5 weeks, which included 4 wins and 6–6 tie with the St. Louis Cardinals at Municipal Stadium. The Cardinals had come into that game with a streak of three straight shutout wins. The Chiefs' D held St. Louis to a late FG as the game ended 6–6. After a 16–0 shutout of Denver the Chiefs had played to a 6–1–2 record over the past nine weeks to stand 7–3–2 with two weeks to play and very much looked like a team with a chance to defend its championship.

Then came the big one at Oakland, the game that decided pro football's toughest division. The Saturday game on December 12 was a stand-alone NBC national telecast. The Chiefs led early 3–0, and the game was tied 6–6 at the half. But the Raiders, behind the angry running of fullback Marv Hubbard, dominated the second half in a 20–6 division-clinching win for Oakland.

The Chiefs had a slim hope for the AFC wild card, but needed a win by a poor Buffalo team in Miami and a win in San Diego to make the playoffs. Miami jumped to a 28–0 first quarter lead and rolled to a 45–7 win. The Chiefs, warming up to play the Chargers, saw the Miami blowout and knew their reign as champions was over. Eliminated, the Chiefs played an uninspired sleep walk game and lost 31–13. In the end, it was that tie in November with Oakland that ultimately cost the Chiefs the AFC West division title; Kansas City finished at 7–5–2, while the Raiders were a game ahead at 8–4–2. The rules were changed several years later to assess such penalties as the Davidson-Taylor incident as dead-ball fouls after the play counted.

Offseason

NFL Draft

Roster

Preseason

Regular season

Schedule

Game summaries

Week 1: at Minnesota Vikings

Week 2: at Baltimore Colts

Week 3: at Denver Broncos

Week 4: vs. Boston Patriots

Week 5: at Cincinnati Bengals

Week 6: vs. Dallas Cowboys

Week 7: vs. Oakland Raiders

Week 8: vs. Houston Oilers

Week 9: at Pittsburgh Steelers

Week 10: vs. St. Louis Cardinals

Week 11: vs. San Diego Chargers

Week 12: vs. Denver Broncos

Week 13: at Oakland Raiders

Week 14: at San Diego Chargers

Standings

References 

Kansas City Chiefs
Kansas City Chiefs seasons
Kansas